Aug. 2020, Editor's Suggestion of Phys. Rev. B, Behavior of Sm in the boron-cage of Sm-doped RB6 (R=Yb,La) observed by multiple-wavelength neutron holography
Official journal

Sep. 2005, Papers of Editors' Choice, 日本物理学会
Official journal

Mar. 2005, 日本物理学会第10回論文賞, 日本物理学会

Nov. 1999, 原田研究奨励賞, (財)金属研究助成会
大山研司
Publisher

Crystal structures and phase stability of antiferroelectric R phases in undoped and Ca-modified sodium niobates
Seiyu Aso; Hiroki Matsuo; Yasuhiro Yoneda; Daisuke Morikawa; Kenji Tsuda; Kenji Ohoyama; Toru Ishigaki; Yuji Noguchi, American Physical Society (APS)
Physical Review B, 19 May 2025, [Reviewed]

Study of Local Atomic Structures of Sm Doped YbB6 Observed by X-ray Fluorescence Holography
Yodai Kobayashi; Kenji Ohoyama; Shoichi Uechi; Koji Kimura; Naohisa Happo; Fumitoshi Iga; Koichi Hayashi, Corresponding, Surface Science Society Japan
e-Journal of Surface Science and Nanotechnology, 05 Apr. 2025, [Reviewed]

Continuously evolving antiferromagnetic order within the superconducting phase in Zn-doped CeCoIn5
Kaede Inoh; Ryosuke Koizumi; Teppei Takahashi; Hayao Fujimoto; Hideaki Ebisawa; Azumi Yashiro; Mika Kohinata; Asuka Hosogai; Akira Matsuo; Koichi Kindo; Ikuto Kawasaki; Daisuke Okuyama; Hung-Cheng Wu; Taku J. Sato; Kenichi Tenya; Kenji Ohoyama; Kazuaki Iwasa; Makoto Yokoyama
Phys. Rev. B, Mar. 2025, [Reviewed]

Recent progress of atomic resolution holography: from point defects to defect complexes　　　　　　　　　　　　　　　
Kouichi Hayashi; Kenji Ohoyama; Tomohiro Matsushita
Applied Physics Express, 2025, [Reviewed]

Atomic Imaging of BaTiO3 by Multiple-Wavelength Neutron Holography
Kota Yamakawa; Hajime Nakada; Koji Kimura; Kenichi Oikawa; Masahide Harada; Yasuhiro Inamura; Kenji Ohoyama; Koichi Hayashi
Journal of the Physical Society of Japan, 15 Oct. 2024, [Reviewed]

Development of instruments for imaging of local magnetic structure by magnetic neutron holography
Tomoya Kanno; Kenji Ohoyama; Hajime Nakada; Yuto Fukui; Kota Yamakawa; Shota Hoshi; Motoki Takano; Yodai Kobayashi; Yuka Tomimatsu; Shingo Takahashi; Takayuki Oku; Takuya Okudaira; Ryuju Kobayashi; Shusuke Takada; Masahide Harada; Kenichi Oikawa; Yasuhiro Inamura; Toetsu Shishido; Keisuke Sato; Koichi Hayashi, Corresponding, Elsevier BV
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Jul. 2024, [Reviewed]

Local Structures of Fe0.08Co0.92 Studied by X-ray Fluorescence Holography
Yuto Fukui; Tomoya Kanno; Kota Yamakawa; Hajime Nakada; Yodai Kobayashi; Keiko Widyanisa; Yuka Tomimatsu; Koji Kimura; Toetsu Shishido; Naohisa Happo; Kenji Ohoyama; Koichi Hayashi
e-Journal of Surface Science and Nanotechnology, Jul. 2023, [Reviewed]

Determination of site occupancy of boron in 6H-SiC by multiple-wavelength neutron holography
Kouichi Hayashi; Maximilian Lederer; Yohei Fukumoto; Masashi Goto; Yuta Yamamoto; Naohisa Happo; Masahide Harada; Yasuhiro Inamura; Kenichi Oikawa; Kenji Ohoyama; and Peter Wellmann
Applied Physics Letters, 28 Mar. 2022, [Reviewed]

Chemical-Pressure-Induced Point Defects Enable Low Thermal Conductivity for Mg2Sn and Mg2Si Single Crystals
Wataru Saito; Kei Hayashi; Zhicheng Huang; Kazuya Sugimoto; Kenji Ohoyama; Naohisa Happo; Masahide Harada; Kenichi Oikawa; Yasuhiro Inamura; Kouichi Hayashi; Takamichi Miyazaki; Yuzuru Miyazaki, American Chemical Society (ACS)
ACS Applied Energy Materials, 22 Apr. 2021, [Reviewed]

Erratum: “Preparation, thermoelectric properties, and crystal structure of boron-doped Mg2Si single crystals” [AIP Advances 10, 035115 (2020)]
Kei Hayashi; Wataru Saito; Kazuya Sugimoto; Kenji Ohoyama; Kouichi Hayashi; Naohisa Happo; Masahide Harada; Kenichi Oikawa; Yasuhiro Inamura; Yuzuru Miyazaki, {AIP} Publishing
AIP Advances, 01 Feb. 2021, [Reviewed]

Behavior of Sm in the boron-cage of Sm-doped RB6 (R=Yb,La) observed by multiple-wavelength neutron holography
S. Uechi; K. Ohoyama; Y. Fukumoto; Y. Kanazawa; N. Happo; M. Harada; Y. Inamura; K. Oikawa; W. Matsuhra; F. Iga; A. K. R. Ang; and K. Hayashi, Corresponding, American Physical Society (APS)
Phys. Rev. B, 24 Aug. 2020, [Reviewed]

Preparation, thermoelectric properties, and crystal structure of boron-doped Mg2Si single crystals
Kei Hayashi; Wataru Saito; Kazuya Sugimoto; Kenji Ohoyama; Kouichi Hayashi; Naohisa Happo; Masahide Harada; Kenichi Oikawa; Yasuhiro Inamura; and Yuzuru Miyazaki, Mg2Si is a potential thermoelectric (TE) material that can directly convert waste energy into electricity. In expectation of improving its TE
performance by increasing electron carrier concentration, the element boron (B) is doped in Mg2Si single crystals (SCs). Their detailed crystal
structures are definitely determined by using white neutron holography and single-crystal x-ray diffraction (SC-XRD) measurements. The
white neutron holography measurement proves that the doped B atom successfully substitutes for the Mg site. The SC-XRD measurement
confirms the B-doping site and also reveals the presence of the defect of Si vacancy (VSi) in the B-doped Mg2Si SCs. The fraction of VSi
increases with increasing B-doping concentration. In the case of B-doped Mg2Si polycrystals (PCs), VSi is absent; this difference between the
SCs and PCs can be attributed to different preparation temperatures. Regarding TE properties, the electrical conductivity, σ, and the Seebeck
coefficient, S, decreases and increases, respectively, due to the decrease in the electron carrier concentration, contrary to the expectation. The
power factor of the B-doped Mg2Si SCs evaluated from σ and S does not increase but rather decreases by the B-doping. The tendencies of these
TE properties can be explained by considering that the donor effect of the B atom is canceled by the acceptor effect of VSi for the B-doped
Mg2Si SCs. This study demonstrates that the preparation condition of Mg2Si should be optimized to prevent the emergence of an unexpected
point defect., AIP Publishing
AIP Advances, 13 Mar. 2020, [Reviewed]

Tetragonality induced superconductivity in anti-ThCr2Si2-type RE2O2Bi (RE = rare earth) with Bi square net
Ryosuke Sei; Hideyuki Kawasoko; Kota Matsumoto; Masato Arimitsu; Kyohei Terakado; Daichi Oka; Shintaro Fukuda; Noriaki Kimura; Hidetaka Kasai; Eiji Nishibori; Kenji Ohoyama; Akinori Hoshikawa; Toru Ishigaki; Tetsuya Hasegawa and Tomoteru Fukumura, Royal Society of Chemistry ({RSC})
Dalton Transactions, 11 Feb. 2020, [Reviewed]

Investigation of magnetism and magnetic structure of anti-ThCr2Si2-type Tb2O2Bi by magnetization and neutron diffraction measurements　　　　　　　　　　　　　　　
Hideyuki Kawasoko; Kenji Ohoyama; Ryosuke Sei; Kota Matsumoto; Daichi Oka; Akinori Hoshikawa; Toru Ishigaki; and Tomoteru Fukumura
AIP Advances,, 01 Oct. 2019, [Reviewed]

A case of multifunctional intermetallic compound: negative thermal expansion coupling with magnetocaloric effect in (Gd,Ho)(Co,Fe)2
Jinyu Hu; 1 Kun Lin; 1; * Yili Cao; 1 Rongjin Huang; 2 Takeshi Matsukawa; 3 Toru Ishigaki; 3 Henry E. Fischer; 4 Kenichi Kato; 5 Takashi Honda; 6 Kazutaka Ikeda; 6 Toshiya Otomo; 6 Kenji Ohoyama; 7 Jinxia Deng; 1 Jun Chen; 1 Xianran Xing
Inorg. Chem. Front.,, 10 Sep. 2019, [Reviewed]

Neutron Diffraction Studies on Valence Ordering Compound YbPd　　　　　　　　　　　　　　　
K. Oyama; M. Sugishima; K. Tanabe; A. Mitsuda; H. Wada; K. Ohoyama; T. Matsukawa; Y. Yoshida; A. Hoshikawa; T. Ishigaki; and K. Iwasa
J. Phys. Soc. Jpn., 10 Oct. 2018, [Reviewed]

White neutron holography in pulsed neutron facilities
Kenji Ohoyama; Kouichi Hayashi, Lead
Physica Status Solidi B: Basic Solid State Physics, 10 Jul. 2018, [Reviewed], [Invited]

Ready to roll? Time to launch POLANO
Tetsuya Yokoo; Shinichi Itoh; Naokatsu Kaneko; Masaki Fujita; Takashi Ino; Manabu Ohkawara; Kenji Ohoyama; Masataka Sakaguchi, American Institute of Physics Inc.
AIP Conference Proceedings, 31 May 2018, [Reviewed]

Principle and reconstruction algorithm for atomic-resolution holography
Tomohiro Matsushita; Takayuki Muro; Fumihiko Matsui; Naohisa Happo; Shinya Hosokawa; Kenji Ohoyama; Ayana Sato-Tomita; Yuji C. Sasaki; Kouichi Hayashi
Journal of the Physical Society of Japan, 2018, [Reviewed]

Fe doping effects on the anomalous specific heat and XAFS oscillation in antiferromagnetic metal of Mn3Si
H. Hiraka; K. Ohoyama; M. Kosaka; D. Matsumura, AIP Publishing
AIP Advances., 2018, [Reviewed]

Crystal structures, magnetic properties, and DFT calculation of B-site defected 12L-perovskites Ba2La2MW2O12 (M = Mn, Co, Ni, Zn)
Yoshihiro Doi; Makoto Wakeshima; Keitaro Tezuka; Yue Jin Shan; Kenji Ohoyama; Sanghyun Lee; Shuki Torii; Takashi Kamiyama; Yukio Hinatsu
JOURNAL OF PHYSICS-CONDENSED MATTER, Sep. 2017, [Reviewed]

Multiple-wavelength neutron holography with pulsed neutrons
Kouichi Hayashi; Kenji Ohoyama; Naohisa Happo; Tomohiro Matsushita; Shinya Hosokawa; Masahide Harada; Yasuhiro Inamura; Hiroaki Nitani; Toetsu Shishido; Kunio Yubuta
SCIENCE ADVANCES, Aug. 2017, [Reviewed]

Development of a polarized He-3 neutron spin filter for POLANO at J-PARC
T. Ino; M. Ohkawara; K. Ohoyama; T. Yokoo; S. Itoh; Y. Nambu; M. Fujita; H. Kira; H. Hayashida; K. Hiroi; K. Sakai; T. Oku; K. Kakurai
INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS FOR CONDENSED MATTER INVESTIGATIONS (PNCMI 2016), 2017, [Reviewed]

Polarisation Analysis Neutron Spectrometer, POLANO, at J-PARC - Concept and Magnetic Field Optimisation
K. Ohoyama; T. Yokoo; S. Itoh; M. Nanbu; K. Iwasa; M. Ohkawara; N. Kaneko; T. Ino; H. Hayashida; T. Oku; H. Kira; S. Tasaki; M. Takeda; H. Kimura; T. J. Sato
Journal of Physics: Conference Series, 11 May 2016, [Reviewed]

Conceptual design of a polarized ³He neutron spin filter for polarized neutron spectrometer POLANO at J-PARC
T. Ino; K. Ohoyama; T. Yokoo; S. Itoh; M. Ohkawara; H. Kira; H. Hayashida; K. Sakai; K. Hiroi; T. Oku; K. Kakurai; L. J. Chang
Journal of Physics: Conference Series, 11 May 2016, [Reviewed]

20pPSB-30 Powder neutron diffraction of valence ordering compound YbPd
Oyama K.; Mitsuda A.; Ohoyama K.; Matsukawa T.; Yoshida Y.; Hoshikawa A.; Ishigaki T.; Iwasa K.; Wada H., The Physical Society of Japan (JPS)
Meeting Abstracts of the Physical Society of Japan, 2016

Development of a 3He nuclear spin flip system on an in-situ SEOP 3He spin filter and demonstration for a neutron reflectometer and magnetic imaging technique
H. Hayashida; T. Oku; H. Kira; K. Sakai; K. Hiroi; T. Ino; T. Shinohara; T. Imagawa; M. Ohkawara; K. Ohoyama; K. Kakurai; M. Takeda; D. Yamazaki; K. Oikawa; M. Harada; N. Miyata; K. Akutsu; M. Mizusawa; J.D. Parker; Y. Matsumoto; S. Zhang; J. Suzuki; K. Soyama; K. Aizawa; M. Arai
J. Phys. Conf. Ser., 2016, [Reviewed]

Local structure of room-temperature superionic Ag-GeSe3 glasses
J. R. Stellhorn; S. Hosokawa; Y. Kawakita; D. Gies; W. -C. Pilgrim; K. Hayashi; K. Ohoyama; N. Blanc; N. Boudet
JOURNAL OF NON-CRYSTALLINE SOLIDS, Jan. 2016, [Reviewed]

Crystallographic, Electronic, and Magnetic Properties of Rock Salt Superstructure Sulfide Lu2CrS4 with Jahn-Teller Distortion
Tezuka Keitaro; Wakeshima Makoto; Nozawa Masataka; Oshikane Keita; Ohoyama Kenji; Shan Yue Jin; Imoto Hideo; Hinatsut Yukio
INORGANIC CHEMISTRY, 19 Oct. 2015, [Reviewed]

Magnetic and Crystal Structures of the Room Temperature Ferrimagnet Sr3YCo4O10.5
Akiko Nakao; Hironori Nakao; Kenji Ohoyama; Shuki Torii; Junrong Zhang; Takashi Kamiyama; Youichi Murakami; Wataru Kobayashi; Ichiro Terasaki, Journal of the Physical Society of Japan
JPS Conf. Proc., 25 Sep. 2015

Development Status of the NMR System for the Polarized 3He Neutron Spin Filter (NSF) in the MLF at J-PARC
Kenji Sakai; Takayuki Oku; Hirotoshi Hayashida; Hiroshi Kira; Kosuke Hiroi; Takashi Ino; Kenji Ohoyama; Manabu Ohkawara; Kazuhisa Kakurai; Takenao Shinohara; Kenichi Oikawa; Masahide Harada; Kazuya Aizawa; Masatoshi Arai; Yoshifumi Sakaguchi; Jun-ichi Suzuki, Journal of the Physical Society of Japan
JPS Conf. Proc. 8, 036015, 25 Sep. 2015, [Reviewed]

Improvement of 3He nuclear polarization for neutron scattering　　　　　　　　　　　　　　　
Takashi Ino; Yasushi Arimoto; Hiroshi Kira; Hirotoshi Hayashida; Yoshifumi Sakaguchi; Manabu Ohkawara; Kenji Ohoyama; Kenji Sakai; Kosuke Hiroi; Takayuki Oku; Kazuhisa Kakurai
JPS Conf. Proc., 2015, [Reviewed]

Demonstration study of small-angle polarized neutron scattering using polarized 3He neutron spin filter　　　　　　　　　　　　　　　
H. Kira; H. Hayashida; H. Iwase; K. Ohishi; J. Suzuki; T. Oku; K. Sakai; K. Hiroi; S. Takata; T. Ino; K. Ohoyama; M. Ohkawara; T. Shinohara; K. Kakurai; K. Aizawa; M. Arai
JPS Conf. Proc., 2015, [Reviewed]

Polarized neutron spectrometer for inelastic experiments at J-PARC
Tetsuya Yokoo; Kenji Ohoyama; Shinichi Itoh; Kazuaki Iwasa; Naokatsu Kaneko; Junichi Suzuki; Manabu Ohkawara; Kazuya Aizawa; Seiji Tasaki; Takashi Ino; Kaoru Taketani; Shigeru Ishimoto; Masayasu Takeda; Takayuki Oku; Hiroshi Kira; Kouichi Hayashi; Hiroyuki Kimura; Taku J. Sato, 8295
EPJ Web of Conferences, Jan. 2015, [Reviewed]

Neutron holography and diffuse scattering of palladium hydride
K. Hayashi; K. Ohoyama; S. Orimo; H. Takahashi; and K. Shibata
Phys. Rev. B, Jan. 2015, [Reviewed]

Polarized-neutron-diffraction study of the microscopic magnetic structure in α''−Fe16N2 nanoparticles
Polarized-neutron-diffraction study of the microscopic magnetic structure in α”-Fe16N2 nanoparticles.; H. Hiraka; K. Ohoyama; Y. Ogata; T. Ogawa; R. Gallage; N. Kobayashi; M. Takahashi; B. Gillon; A. Gukasov; and K. Yamada
Phys. Rev. B, Oct. 2014, [Reviewed]

Novel Magnetic Chiral Structures and Unusual Temperature,Hysteresis in the Metallic Helimagnet MnP
T. Yamazaki; Y. Tabata; T. Waki; T. J Sato; M. Matsuura; K. Ohoyama; M. Yokoyama; H. Nakamura, The Physical Society of Japan
J. Phys. Soc. Jpn., May 2014, [Reviewed]

Novel Magnetic Chiral Structures and Unusual Temperature Hysteresis in the Metallic Helimagnet MnP
Yamazaki Teruo; Tabata Yoshikazu; Waki Takeshi; Sato Taku J.; Matsuura Masato; Ohoyama Kenji; Yokoyama Makoto; Nakamura Hiroyuki
Journal of the Physical Society of Japan, 15 Apr. 2014, [Reviewed]

Concepts of Neutron Polarisation Analysis Devices for a New Neutron Chopper Spectrometer, POLANO, in J-PARC
K. Ohoyama; T. Yokoo; S. Itoh; T. Ino; M. Ohkawara; T. Oku; S. Tasaki; K. Iwasa; T. J. Sato; S Ishimoto; K. Taketani; H. Kira; Y. Sakaguch; M. Nanbu; H Hiraka; H. M. Shimizu; M. Takeda; M. Hino; K. Hayashi; U. Fliges and P. Hautle
J. Phys.: Conf. Ser., Apr. 2014

Construction of Polarized Inelastic Neutron Spectrometer in J-PARC
T. Yokoo; K. Ohoyama; S. Itoh; J. Suzuki; K. Iwasa; T. J. Sato; H. Kira; Y. Sakaguchi; T. Ino; T. Oku; K.Tomiyasu; M. Matsuura; H. Hiraka; M. Fujita; H. Kimura; T. Sato; J. Suzuki; M. Takeda; K. Kaneko; M. Hino; S. Muto
Journal of Physics: Conference Series, Apr. 2014

Development and demonstration of in-situ SEOP 3He spin filter system for neutron spin analyzer on the SHARAKU polarized neutron reflectometer at J-PARC
H. Hayashida; T. Oku; H. Kira; K. Sakai; M. Takeda; Y. Sakaguchi; T. Ino; T. Shinohara; K. Ohoyama; J. Suzuki; K. Kakurai; M. Mizusawa; N. Miyata; D. Yamazaki; R. Maruyama; K. Soyama; M. Arai
Journal of Physics: Conference Series,, Apr. 2014

Diffusion Path and Conduction Mechanism of Protons in Hydroxyapatite,　　　　　　　　　　　　　　　
M. Yashima; N. Kubo; K. Omoto; H. Fujimori; K. Fujii; K. Ohoyama
J. Phys. Chem. C, Feb. 2014

Development of ³He Neutron Spin Filter for the Application at an Intense Pulsed Neutron Source Facility
Takayuki Oku; Hiroshi Kira; Hirotoshi Hayashida; Kenji Sakai; Kosuke Hiroi; Takenao Shinohara; Takashi Ino; Manabu Ohkawara; Kenji Ohoyama; Shin-ichi Takata; Kazuki Ohishi; Hiroki Iwase; Noboru Miyata; Kazuhiro Akutsu; Yoshifumi Sakaguchi; Masayasu Takeda; Jun-ichi Suzuki; Kazuya Aizawa; Masatoshi Arai; Kazuhisa Kakurai, The Japanese Society for Neutron Science
hamon, 2014

Development of portable polarized He-3 neutron spin filter and its application to magnetic field imaging at J-PARC
K. Sakai; T. Oku; H. Hayashida; H. Kira; T. Shinohara; K. Oikawa; M. Harada; K. Kakurai; K. Aizawa; M. Arai; Y. Sakaguchi; J. Suzuki; T. Ino; K. Ohoyama
INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013), 2014, [Reviewed]

Development of portable polarized 3He spin flipper for polarized neutron experiment at J-PARC
K. Sakai; T. Oku; H. Hayashida; H. Kira; T. Shinohara; K. Oikawa; M. Harada; K. Kakurai; K. Aizawa; M. Arai; Y. Sakaguchi; J. Suzuki; T. Ino; K. Ohoyama
J. Phys.: Conf. Ser., 2014, [Reviewed]

26aXZB-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC
Ohoyama K; Yokoo T; Itoh S; Suzuki J; Sato T. J; Iwasa K; Kira H; Sakaguchi Y; Oku T; Ino T; Hiraka H; Matsuura M; Fujita M; Tomiyasu K; Kimura H; Suzuki J; Shimizu H. M; Arima T; Takeda M; Kaneko K; Hino M; Muto S; Nojiri H; Lee C. H; Park J. G; Choi S, 一般社団法人日本物理学会
Meeting abstracts of the Physical Society of Japan, 26 Mar. 2013

Basic Concepts of Polarisation Analysis for Neutron Chopper Spectrometer POLANO at J-PARC
K. Ohoyama; T. Yokoo; S. Itoh; J. Suzuki; K. Iwasa; T. J. Sato; H. Kira; Y. Sakaguchi; T. Ino; T. Oku; K. Tomiyasu; M. Matsuura; H. Hiraka; M. Fujita; H. Kimura; T. Sato; J. Suzuki; H. M. Shimizu; T. Arima; M. Takeda; K. Kaneko; M. Hino; S. Muto; H. Nojiri; C. H. Lee; J. G. Park; S. Choi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jan. 2013, [Reviewed]

26aXZB-2 J-PARC偏極中性子散乱装置POLANO計画の状況(26aXZB 領域10,ビーム物理領域合同 X線・粒子線(中性子),領域10(誘電体,格子欠陥,X線・粒子線,フォノン))
大山 研司; 横尾 哲也; 伊藤 晋一; 鈴木 純一; 佐藤 卓; 岩佐 和晃; 吉良 弘; 坂口 佳史; 奥 隆之; 猪野 隆; 平賀 晴弘; 松浦 直人; 藤田 全基; 富安 啓輔; 木村 宏之; 鈴木 淳市; 清水 裕彦; 有馬 孝尚; 武田 全康; 金子 耕士; 日野 正裕; 武藤 豪; 野尻 浩之; C. H. Lee; J. G. Park; S. Choi, 一般社団法人日本物理学会
日本物理学会講演概要集, Jan. 2013

Precision magnetic field mapping for the He-3 neutron spin filter
Ino Takashi; Arimoto Yasushi; Kira Hiroshi; Sakaguchi Yoshifumi; Shinohara Takenao; Sakai Kenji; Oku Takayuki; Kakurai Kazuhisa; Ohoyama Kenji
9TH INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS IN CONDENSED MATTER INVESTIGATIONS, 2013, [Reviewed]

Physical properties of double perovskite-type barium neodymium osmate Ba2NdOsO6
Wakeshima Makoto; Hinatsu Yukio; Ohoyama Kenji
JOURNAL OF SOLID STATE CHEMISTRY, Jan. 2013, [Reviewed]

Basic concepts of polarisation analysis for neutron chopper spectrometer POLANO at J-PARC　　　　　　　　　　　　　　　
K. Ohoyama; T. Yokoo; S. Itoh; J. Suzuki; K. Iwasa; T.J. Sato; H. Kira; Y. Sakaguchi; T. Ino; T. Oku; K. Tomiyasu; M. Matsuura; H. Hiraka; M. Fujita; H. Kimura; T. Sato; J. Suzuki; H.M. Shimizu; T. Arima; M. Takeda; K. Kaneko; M. Hino; S. Muto; H. Nojiri; C.H. Lee; J.G. Park; S. Choi
J. Phys. Soc. Jpn., 2013, [Reviewed]

Successive phase transitions induced by magnetic fields in a cubic system, NdPd₃S₄
M. Watahiki; E. Matsuoka; K. Iwasa; Y. Matsumoto; S. Nakamura; T. Nojima; K. Ohoyama; K. Tanigaki; H. Aoki; H. Onodera
Journal of Physics: Conference Series, 14 Dec. 2012, [Reviewed]

Oxyhydrides of (Ca,Sr,Ba)TiO3 Perovskite Solid Solutions
Tatsunori Sakaguchi; Yoji Kobayashi; Takeshi Yajima; Masatoshi Ohkura; Cedric Tassel; Fumitaka Takeiri; Shingo Mitsuoka; Hiroshi Ohkubo; Takafumi Yamamoto; Jung Eun Kim; Naruki Tsuji; Akihiko Fujihara; Yoshitaka Matsushita; James Hester; Maxim Avdeev; Kenji Ohoyama; Hiroshi Kageyama
INORGANIC CHEMISTRY, Nov. 2012, [Reviewed]

Newly Proposed Inelastic Neutron Spectrometer POLANO　　　　　　　　　　　　　　　
Tetsuya Yokoo; Kenji Ohoyama; Shinichi Itoh; Junichi Suzuki; Kazuaki Iwasa; Taku J Sato; Hiroshi Kira; Yoshifumi Sakaguchi; Takashi Ino; Takayuki Oku; Keisuke Tomiyasu; Masato Matsuura; Haruhiro Hiraka; Masaki Fujita; Hiroyuki Kimura; Toyoto Sato; Junichi Suzuki; Masayasu Takeda; Koji Kaneko; Masahiro Hino; Suguru Muto
Journal of the Physical Society of Japan, Sep. 2012, [Reviewed]

(Sr1-xBax)FeO2 (0.4 <= x <= 1): A New Oxygen-Deficient Perovskite Structure
Takafumi Yamamoto; Yoji Kobayashi; Naoaki Hayashi; Cedric Tassel; Takashi Saito; Shoji Yamanaka; Mikio Takano; Kenji Ohoyama; Yuichi Shimakawa; Kazuyoshi Yoshimura; Hiroshi Kageyama
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Jul. 2012, [Reviewed]

Crystal structure and thermoelectric properties of K xBa 8-xZn yGe 46-y clathrates
Kengo Kishimoto; Yuta Sasaki; Tsuyoshi Koyanagi; Kenji Ohoyama; Koji Akai
Journal of Applied Physics, 01 May 2012, [Reviewed]

Magnetic and Neutron Diffraction Study on Melilite-Type Oxides Sr2MGe2O7 (M = Mn, Co)
Endo Takashi; Doi Yoshihiro; Hinatsu Yukio; Ohoyama Kenji
INORGANIC CHEMISTRY, 19 Mar. 2012, [Reviewed]

Modified Cross-Correlation for Efficient White-Beam Inelastic Neutron Scattering Spectroscopy
K. Tomiyasu; M. Matsuura; H. Kimura; K. Iwasa; K. Ohoyama; T. Yokoo; S. Itoh; E. Kudoh; T. Sato; M. Fujita
Nuclear Instruments and Methods in Physics Research Section A, 10 Mar. 2012, [Reviewed]

Crystal Structure, Oxygen Deficiency, and Oxygen Diffusion Path of Perovskite-Type Lanthanum Cobaltites La0.4Ba0.6CoO3-delta and La0.6Sr0.4CoO3-delta
Yi-Ching Chen; Masatomo Yashima; Takashi Ohta; Kenji Ohoyama; Shinji Yamamoto
JOURNAL OF PHYSICAL CHEMISTRY C, Mar. 2012, [Reviewed]

Emergence of Magnetic Long-range Order in Frustrated Pyrochlore Nd2Ir2O7 with Metal-Insulator Transition
Tomiyasu Keisuke; Matsuhira Kazuyuki; Iwasa Kazuaki; Watahiki Masanori; Takagi Seishi; Wakeshima Makoto; Hinatsu Yukio; Yokoyama Makoto; Ohoyama Kenji; Yamada Kazuyoshi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Mar. 2012, [Reviewed]

Crystal structure refinement of Cu6O8YCl by powder neutron diffraction
Kenji Kawashima; Kazumasa Horigane; Kenji Ohoyama; Jun Akimitsu
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011), 2012, [Reviewed]

Magnetic impurity effect on charge and magnetic order in doped La1.5Ca0.5CoO4
K. Horigane; H. Hiraka; K. Tomiyasu; K. Ohoyama; D. Louca; K. Yamada
5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING, 2012, [Reviewed]

Development of a non-adiabatic two-coil spin flipper for a thermal polarised neutron diffractometer with a 3He spin filter
K. Ohoyama; K. Tsutsumi; T. Ino; H. Hiraka; Y. Yamaguchi; H. Kira; T. Oku; Y. Sakaguchi; Y. Arimoto; W. Zhang; H. Kimura; K. Iwasa; M. Takeda; J. Suzuki; K. Yamada; K. Kakurai
Nucl. Instr. and Methods in Phys. Res. A, 2012, [Reviewed]

Development of polarized Xe gas target for neutron experiment at J-PARC
K. Sakai; T. Oku; T. Shinohara; H. Kira; M. Ooi; F. Maekawa; K. Kakurai; T. Ino; Y. Arimoto; H.M. Shimizu; Y. Sakaguchi; J. Suzuki; K. Ohoyama; L.J. Chang
J. Phys.: Conf. Ser., 2012, [Reviewed]

High Field Neutron Diffraction Studies on Metamagnetic Transition of Multiferroic BiFeO3
Kenji Ohoyama; Seongsu Lee; Shunsuke Yoshii; Yasuo Narumi; Takayuki Morioka; Hiroyuki Nojiri; Gun Sang Jeon; Sang-Wook Cheong; Je-Geun Park
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 2011, [Reviewed]

Magnetic correlations and the influence of atomic disorder in frustrated isosceles triangular lattice antiferromagnet CuMnO2
Noriki Terada; Yoshinori Tsuchiya; Hideaki Kitazawa; Toyotaka Osakabe; Naoto Metoki; Naoki Igawa; Kenji Ohoyama
Physical Review B, Aug. 2011

First-order-like antiferromagnetic transition and field-induced antiferroquadrupolar transition in terbium palladium bronze TbPd3S4
Eiichi Matsuoka; Hiroshi Shida; Takeshi Matsumura; Kenji Ohoyama; Hideya Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jul. 2011, [Reviewed]

Research on glass cells for³He neutron spin filters
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; K. Aizawa; M. Arai; M. Takeda; S. Wakimoto; D. Yamazaki; S. Koizumi; Y. Endoh; L. J. Chang; L. J. Chang; L. J. Chang; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; K. Ohara; K. Kakurai
Physica B: Condensed Matter, Jun. 2011, [Reviewed]

The Fermi Chopper Spectrometer 4SEASONS at J-PARC
Ryoichi Kajimoto; Mitsutaka Nakamura; Yasuhiro Inamura; Fumio Mizuno; Kenji Nakajima; Seiko Ohira-Kawamura; Tetsuya Yokoo; Takeshi Nakatani; Ryuji Maruyama; Kazuhiko Soyama; Kaoru Shibata; Kentaro Suzuya; Setsuo Sato; Kazuya Aizawa; Masatoshi Arai; Shuichi Wakimoto; Motoyuki Ishikado; Shin-ichi Shamoto; Masaki Fujita; Haruhiro Hiraka; Kenji Ohoyama; Kazuyoshi Yamada; Chul-Ho Lee
J Phys. Soc. Jpn, 13 May 2011, [Reviewed]

Fe-Site Substitution Effect on the Structural and Magnetic Properties in SrFeO2
Liis Seinberg; Takafumi Yamamoto; Cedric Tassel; Yoji Kobayashi; Naoaki Hayashi; Atsushi Kitada; Yuji Sumida; Takashi Watanabe; Masakazu Nishi; Kenji Ohoyama; Kazuyoshi Yoshimura; Mikio Takano; Werner Paulus; Hiroshi Kageyama
INORGANIC CHEMISTRY, May 2011, [Reviewed]

Large Topological Hall Effect in a Short-Period Helimagnet MnGe
N. Kanazawa; Y. Onose; T. Arima; D. Okuyama; K. Ohoyama; S. Wakimoto; K. Kakurai; S. Ishiwata; Y. Tokura
PHYSICAL REVIEW LETTERS, Apr. 2011, [Reviewed]

Spontaneous strain in ferroquadrupolar phase of TmAu2
M. Kosaka; Y. Shida; A. Imanari; S. Katano; K. Ohoyama; H. Onodera
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010), 2011, [Reviewed]

Importance of neutron scattering for materials science: Expectations on magnetic holography
Kenji Ohoyama; Kouichi Hayashi; Haruhiro Hiraka
e-Journal of Surface Science and Nanotechnology, 2011, [Reviewed]

Applications of ³He neutron spin filters on the small-angle neutron scattering spectrometer SANS-J-II
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Aizawa; M. Arai; Y. Noda; S. Koizumi; M. Takeda; Y. Endoh; L. J. Chang; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; K. Kakurai
Journal of Physics: Conference Series, 2011, [Reviewed]

Structure of glasses for ³He neutron spin filter cells
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; K. Aizawa; M. Arai; M. Takeda; Y. Endoh; L. J. Chang; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; K. Ohara; K. Kakurai
Journal of Physics: Conference Series, 2011, [Reviewed]

Development and test of SEOP neutron spin filter in Japan
H. Kira; Y. Sakaguchi; T. Oku; J. Suzuki; M. Nakamura; M. Arai; K. Kakurai; Y. Endoh; Y. Arimoto; T. Ino; H.M. Shimizu; T. Kamiyama; K. Tsutsumi; K. Ohoyama; H. Hiraka; K. Yamada; L.-J. Chang
Physica B, 2011, [Reviewed]

Orthogonal Spin Arrangement in Quasi-Two-Dimensional La2Co2O3Se2
Fuwa Yayoi; Endo Takashi; Wakeshima Makoto; Hinatsu Yukio; Ohoyama Kenji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 29 Dec. 2010, [Reviewed]

Multimode hydriding/dehydriding reactions of CaPd　　　　　　　　　　　　　　　
Kazutaka Ikeda; Noriki Okuda; Kenji Ohoyama; Hai-Wen Li; Hiroyuki T. Takeshita; Toshiya Otomo; Shin-ichi Orimo
CHEMICAL COMMUNICATIONS, 06 Oct. 2010

Synthesis, structure and magnetic properties of V4O9-A missing link in binary vanadium oxides
Satoshi Yamazaki; Chang Li; Kenji Ohoyama; Masakazu Nishi; Masaki Ichihara; Hiroaki Ueda; Yutaka Ueda
JOURNAL OF SOLID STATE CHEMISTRY, Jul. 2010, [Reviewed]

Synthesis and Thermal Stability of the Solid Solution AFeO(2) (A = Ba, Sr, Ca)
Takafumi Yamamoto; Zhaofei Li; Cedric Tassel; Naoaki Hayashi; Mikio Takano; Masahiko Isobe; Yutaka Ueda; Kenji Ohoyama; Kazuyoshi Yoshimura; Yoji Kobayashi; Hiroshi Kageyama
INORGANIC CHEMISTRY, Jul. 2010, [Reviewed]

Antiferromagnetic Alignment of Magnetic Dipolar Moments Observed by Neutron Powder Diffraction in Rare-Earth Palladium Bronze PrPd3S4
Matsuoka Eiichi; Usui Daichi; Sasaki Yuta; Masanori Watahiki; Kazuaki Iwasa; Hiroshi Shida; Kenji Ohoyama; Hideya Onodera, Neutron powder diffraction and inelastic-neutron-scattering experiments have been performed on PrPd3S4 as well as magnetization and magnetic-susceptibility measurements of single-crystalline samples to examine the order parameter below $T_{\text{M } } = 1.56$ K. From the results of the inelastic-neutron-scattering and magnetization measurements, the ground state of the $J$-multiplet of Pr3+ under a cubic crystalline electric field with Th symmetry was determined to be the $\Gamma_{4},{}^{(2)}$ triplet with the first excited state situated above 390 K. Since the dipolar operator and the $T^{\alpha}$- and $T^{\beta}$-type octupolar operators are proportional to the same matrix with the bases of the ground $\Gamma_{4},{}^{(2)}$ triplet, the antiferromagnetic (AFM) alignment of the magnetic dipolar moments below $T_{\text{M } }$ observed in the neutron powder diffraction experiment implies two possible ordering states, i.e., AFM ordering induced by a dipolar interaction and antiferro-octupolar ordering induced by an octupolar interaction., Physical Society of Japan
J Phys Soc Jpn, 15 Jun. 2010

Universal magnetic structure of the half-magnetization phase in Cr-based spinels
M. Matsuda; K. Ohoyama; S. Yoshii; H. Nojiri; P. Frings; F. Duc; B. Vignolle; G. L.J.A. Rikken; L. P. Regnault; S. H. Lee; H. Ueda; Y. Ueda
Physical Review Letters, 26 Jan. 2010

Hot pressing of Ge crystals toward a reflection-plane-selective neutron monochromator
Y. Miyake; H. Hiraka; K. Ohoyama; Y. Yamaguchi; K. Yamada, Institute of Physics Publishing
Journal of Physics: Conference Series, 2010

Non-Fermi-Liquid Behavior on an Iron-Based Itinerant Electron Magnet Fe3Mo3N
Waki Takeshi; Terazawa Shinsuke; Tabata Yoshikazu; Oba Fumiyasu; Michioka Chishiro; Yoshimura Kazuyoshi; Ikeda Shugo; Kobayashi Hisao; Ohoyama Kenji; Nakamura Hiroyuki
Journal of the Physical Society of Japan, 2010, [Reviewed]

Neutron Diffraction Study on the Multiple Magnetization Plateaus in TbB₄ under Pulsed High Magnetic Field
S. Yoshii; K. Ohoyama; K. Kurosawa; H. Nojiri; M. Matsuda; P. Frings; F. Duc; B. Vignolle; G. L. J; A. Rikken; L. -P. Regnault; S. Michimura; F. Iga
Phys. Rev. Lett., 14 Aug. 2009, [Reviewed]

Synchrotron radiation powder X-ray and neutron diffraction studies on novel Y₃Al₂ hydrides
T. Sato; K. Ikeda; K. Ohoyama; N. Watanabe; S. Orimo
Journal of Alloys and Compounds, Jul. 2009, [Reviewed]

Universal thermal response of the Prussian blue lattice
Matsuda, T; Kim, J. E; Ohoyama, K; Moritomo, Y, AMER PHYSICAL SOC
PHYSICAL REVIEW B, May 2009, [Reviewed]

Magnetic Phase Diagrams of Dy0.8Gd0.2B2C2 with the Antiferroquadrupolar Ordering in the Antiferromagnetic Phase
Eiichi Matsuoka; Shoei Ogushi; Yuta Sasaki; Masato Sakata; Kenji Ohoyama; Hideya Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Mar. 2009, [Reviewed]

Complex Magnetic Structures of a Shastry-Sutherland Lattice TmB4 Studied by Powder Neutron Diffraction Analysis
S. Michimura; A. Shigekawa; F. Iga; T. Takabatake; K. Ohoyama, Powder neutron diffraction analysis was performed on (TmB1)-B-11, which undergoes successive transitions at T-N1 = 11.7K, T* = 11 K, aid T-N2 = 10K. An incommensurate structure with two propagation vectors, k(2) [1 +/- k' +/- k" +/- k", 0] and k(2)' = [1 +/- k' +/- 3k", +/- k", 0] (k' = 0.1226 and k" similar or equal to 0.012). is suggested for phase II (T-3 <= T <= T-N1). Phase III (T-N2 <= T <= T-(sic)) is described by one propagation vector, k(3) = [1 +/- k',0,0]. The propagation vector for phase IV (T <= T-N2) further changes to a commensurate one characterized by k(4) = [100]. Four Tm moments in the c-plane order in a (+-+-) type, where + and - mean the directions of the moments parallel and antiparallel to the c-direction, respectively. The diffuse scattering intensity around the (100) magnetic reflection remains above T-N2 up to 20 K.
Journal of the Physical Society of Japan, 26 Jan. 2009, [Reviewed]

CaFeO2: A New Type of Layered Structure with Iron in a Distorted Square Planar Coordination
Cedric Tassel; Jose Miguel Pruneda; Naoaki Hayashi; Takashi Watanabe; Atsushi Kitada; Yoshihiro Tsujimoto; Hiroshi Kageyama; Kazuyoshi Yoshimura; Mikio Takano; Masakazu Nishi; Kenji Ohoyama; Masaichiro Mizumaki; Naomi Kawamura; Jorge Iniguez; Enric Canadell
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Jan. 2009, [Reviewed]

Crystal Structures and Magnetic Properties of Two—dimensional Antiferromagnets Co1-xZnxTeMnO6
Y. Doi; R. Suzuki; Y. Hinatsu; K. Ohoyama
J. Solid State Chem., 2009

Magnetic and Neutron Diffraction Study on Quaternary Oxides MTeMoO6 (M = Mn and Zn)
Y. Doi; R. Suzuki; Y. Hinatsu; K. Ohoyama
J. Phys.: Condens. Matter, 2009

Structural and Magnetic Properties of the Quaternary Oxides Ba6Ln2Fe4O15 (Ln = Pr and Nd)
K. Abe; Y. Doi; Y. Hinatsu; K. Ohoyama
J. Solid State Chem., 2009

Development of a compact on-beam SEOP neutron spin filter
T. Ino; M. Nakamura; T. Oku; T. Shinohara; J. Suzuki; K. Ohoyama; H. Hiraka
Physica B, 2009, [Reviewed]

Field-Induced Magnetic Structures in Antiferroquadrupolar Ordering Compound DyB2C2
Kenji Ohoyama; Kentaro Indoh; Hiroki Yamauchi; Aya Tobo; Eiichi Matsuoka; Masugu Sato; Susumu Katano; Hideya Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Nov. 2008, [Reviewed]

Simultaneous Occurrence of an Antiferroquadrupolar and a Ferromagnetic Transitions in Rare-Earth Palladium Bronze CePd3S4
Eiichi Matsuoka; Daichi Usui; Yuta Sasaki; Hironori Nakao; Hiroshi Shida; Kenji Ohoyama; Hideya Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Nov. 2008, [Reviewed]

Experimental visualization of lithium diffusion in LixFePO4
Shin-ichi Nishimura; Genki Kobayashi; Kenji Ohoyama; Ryoji Kanno; Masatomo Yashima; Atsuo Yamada
NATURE MATERIALS, Sep. 2008, [Reviewed]

Diffusion Path of Oxide Ions in an Apatite-Type Ionic Conductor La-9.69(Si5.70Mg0.30)O-26.24
Roushown Ali; Masatomo Yashima; Yoshitaka Matsushita; Hideki Yoshioka; Kenji Ohoyama; Fujio Izumi
CHEMISTRY OF MATERIALS, Aug. 2008, [Reviewed]

Neutron diffraction and isotropic volume expansion caused by deuterium absorption into La(Fe0:88Si0:12)13
Shun Fujieda; Asaya Fujita; Kazuaki Fukamichi; Yasuo Yamaguchi; Yasuo Yamaguchi; Kenji Ohoyama
Journal of the Physical Society of Japan, 01 Jul. 2008

Giant uniaxial anisotropy in the magnetic and transport properties of CePd5Al2
Onimaru, Takahiro; Inoue; Yukihiro F; Shigetoh, Keisuke; Umeo, Kazunori; Kubo, Hirokazu; Ribeiro, Raquel A; Ishida, Akihiro; Avila, Marcos A; Ohoyama, Kenji; Sera; Masafumi e, Electrical resistivity p, magnetic susceptibility chi magnetization M, and specific heat measurements are reported on a singlecrystalline sample of CePd5Al2, showing successive antiferromagnetic orderings at T-N1 = 4.1 K and T-N2 = 2.9 K. The temperature dependence of rho shows a Kondo metal behavior with large anisotropy, rho(c)/rho(a) = 3.2 at 20 K, and opening of a superzone gap along the tetragonal c-direction below T-N1. Both T-N1 and T-N2 gradually increase with applying pressure up to 2.5 GPa. The data of chi(T) and M(B) in the paramagnetic state were analyzed using a crystalline electric field (CEF) model. It led to a Kramers doublet ground state with wave functions consisting primarily of vertical bar+/- 5/2 >, whose energy level is isolated from the excited states by 230 and 300 K. This CEF effect gives rise to the large anisotropy in the paramagnetic state. In the ordered state, the uniaxial magnetic anisotropy is manifested as M-c/M-a = 20 in B = 5 T and at 1.9 K, and chi(c)/chi(a) = 25 in B = 0.1 T and at 4 K. In powder neutron diffraction experiments, magnetic reflections were observed owing to the antiferromagnetic ordered states below T-N1, whereas no additional ref, PHYSICAL SOC JAPAN
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jul. 2008, [Reviewed]

Neutron holography measurement using multi array detector
K. Hayashi; K. Ohoyama; S. Orimo; Y. Nakamori; H. Takahashi; K. Shibata
Japanese Journal of Applied Physics, Apr. 2008, [Reviewed]

Experimental and computational studies on solvent-free rare-earth metal borohydrides RE(BH₄)₃ (RE = Y, Dy, and Gd)
T. Sato; K. Miwa; Y. Nakamori; K. Ohoyama; H.-W. Li; T. Noritake; M. Aoki; S. Towata; S. Orimo
Phys. Rev. B, 2008, [Reviewed]

Search of Long-Range Magnetic Ordering in Superconducting Five-Layered Cuprate
C.H. Lee; A. Iyo; K. Kihou; H. Kito; H. Hiraka; K. Ohoyama; K. Yamada
J. Phys. Soc. Jpn., 2008, [Reviewed]

Synthesis, Crystal Structures and Magnetic Properties of New 12L-Perovskites Ba4LnRu3O12 (Ln = Lanthanides)
Y. Shimoda; Y. Doi; Y. Hinatsu; K. Ohoyama
Chem. Mater., 2008

Crystal and magnetic structures of Y2CrS4
Keitaro Tezuka; Yue Jin Shan; Hideo Imoto; Kenji Ohoyama
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Nov. 2007, [Reviewed]

On the magnetic symmetry of the low temperature phase of ZnCr2O4
Kagomiya, Isao; Hata, Yoshiaki; Eto, Daisuke; Yanagihara, Hideto; Kita, Eiji; Nakajima, Kenji; Kakurai, Kazuhisa; Nishi, Masakazu; Ohoyama, Kenji, PHYSICAL SOCIETY JAPAN
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 2007, [Reviewed]

Magnetic properties of LaMnO3+delta nanocrystals in MCM-41 mesoporous silica
H. Kira; H. Tamura; Y. Ando; M. Onodera; H. Nakao; Y. Murakami; K. Tsuda; K. Ohoyama; S. Yamazaki; T. Tajiri; H. Deguchi
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Mar. 2007, [Reviewed]

Inelastic neutron scattering measurements in a quadrupolar ordering compound YbSb
A. Oyamada; K. Kuwahara; K. Ohoyama; K. Iwasa; M. Kohgi; S. Maegawa
Journal of Magnetism and Magnetic Materials, Mar. 2007, [Reviewed]

Neutron diffraction under 30 T pulsed magnetic fields
K. Ohoyama; N. Katoh; H. Nojiri; Y.H. Matsuda; H. Hiraka; K. Ikeda; H. M. Shimizu
J. Magn. Magn. Mater., Mar. 2007, [Reviewed]

Neutron diffraction experiments with 40T pulsed magnets
K Ohoyama; N Katoh; H Nojiri; Y H Matsuda; H Hiraka; K Ikeda; H M Shimizu
J. Phys.: Conf. Series, Dec. 2006, [Reviewed]

Application of miniature pulsed magnets to synchrotron X-ray spectroscopy and neutron diffraction
Y. H. Matsuda; Y. Murata; T. Inami; K. Ohwada; H. Nojiri; K. Ohoyama; N. Katoh; Y. Murakami; F. Iga; T. Takabatake; A. Mitsuda; H. Wada
Journal of Physics: Conference Series, 01 Dec. 2006

Formation of perovskite-type hydrides and thermal desorption processes in Ca-T-H (T = 3d transition metals)
K. Ikeda; S. Kato; K. Ohoyama; Y. Nakamori; H.T. Takeshita; S. Orimo
Scripta Materialia, Nov. 2006, [Reviewed]

Magnetic phase diagrams of Y-diluted antiferromagnet Tb1-xYxB2C2 (0.2 <= x <= 0.5)
Masami Haino; Aya Tobo; Eiichi Matsuoka; Kenji Ohoyama; Hideya Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jul. 2006, [Reviewed]

Magnetic Properties of the Spin Tetramer Compound Ba6La2Fe4O15
K. Abe; Y. Doi; Y. Hinatsu; K. Ohoyama
Chem. Mater., 2006

Possible high TQ in YbAl3C3 with 4f 13 system
Masashi Kosaka; Yoshiaki Kato; Chieko Araki; Nobuo Môri; Yoshiki Nakanishi; Masahito Yoshizawa; Kenji Ohoyama; Catalin Martin; Stanley W. Tozer
Journal of the Physical Society of Japan, Sep. 2005, [Reviewed]

Temperature dependence of lattice parameters and anisotropic thermal expansion of bismuth oxide
M Yashima; D Ishimura; K Ohoyama
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Aug. 2005

Detailed measurements of characteristic profiles of magnetic diffuse scattering in ErB2C2
K Ohoyama; K Indoh; A Tobo; K Kaneko; A Hino; H Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Feb. 2005, [Reviewed]

Designed performance of high resolution chopper spectrometer at J-PARC
S. Itoh; K. Ohoyama; T. Otomo; K. Nakajima; K. Kuwahara; R. Kajimoto; T. Kamiyama; O. Yamamuro, A designed performance of the high resolution chopper spectrometer of which construction has been proposed at J-PARC to study dynamical properties of materials showing a wide spatial and temporal correlations is summarized.
Journal of Neutron Research, 01 Jan. 2005, [Reviewed]

Magnetic Properties and Neutron Diffraction Study of Double Perovskites Ca2LnRuO6 (Ln = Y, La-Lu)
C. Sakai; Y. Doi; Y. Hinatsu; K. Ohoyama
J. Phys.: Condens. Matter, 2005

Structure and Magnetic Properties of the Two-dimensional Antiferromagnet Na2TbO3
Y. Doi; K. Ninomiya; Y. Hinatsu; K. Ohoyama
J. Phys.: Condens. Matter, 2005

Resonant X-ray scattering on antiferroquadrupolar ordering compound Dy0.8Gd0.2B2C2
Sakata, M; Tobo, A; Matsumura, T; Okuyama, D; Murakami, Y; Wakabayashi, Y; Sawa, H; Ohoyama, K; Onodera, H, Gd substitution in DyB2C2 enhances the antiferromagnetic (AFM) interaction and weakens the antiferroquadrupolar (AFQ) interaction. In Dy0.8Gd0.2B2C2, two successive transitions occur. By performing resonant X-ray scattering measurements, we confirmed the AFQ ordering temperature TQ=18.0K and the N?el temperature TN=19.5K; TN is higher than TQ in Dy 0.8Gd0.2B2C2, in contrast to DyB2C2. There exists an AFM phase between TQ and TN, and the magnetic structure is described by k=[100]. This kind of AFM phase is also observed in HoB2C2 and TbB2C2, although the magnetic structures of these compounds are long-periodic ones. ? 2005 Elsevier B.V. All rights reserved.
Physica B-Condensed Matter, 2005, [Reviewed]

Revised crystal structure model of Li₂NH by neutron powder diffraction
K. Ohoyama; Y. Nakamori; S. Orimo; K. Yamada
Journal of the Physical Society of Japan, Jan. 2005, [Reviewed]

Strctural and magnetic properties of pseudo-two-dimensional triangular antiferromagnets Ba3MSb2O9 (M = Mn, Co, and Ni)
Doi YS; Hinatsu Y; Ohoyama K
JOURNAL OF PHYSICS-CONDENSED MATTER, 15 Dec. 2004, [Reviewed]

Spin reorientation transition in layered perovskite CaNdFeO4
Oyama S; Wakeshima M; Hinatsu Y; Ohoyama K
JOURNAL OF PHYSICS-CONDENSED MATTER, 24 Nov. 2004, [Reviewed]

Phase transitions and diagrams of pseudo-binary antiferroquadrupolar ordering compound Ho1-xTbxB2C2 (0 <= x <= 1)
K Ido; A Tobo; K Kaneko; K Ohoyama; H Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jul. 2004, [Reviewed]

Impurity-induced ferromagnetism and impurity states in Nd 1/2(Mn0.95M0.05)O3
Y. Moritomo; K. Murakami; H. Ishikawa; M. Hanawa; A. Nakamura; K. Ohoyama
Physical Review B - Condensed Matter and Materials Physics, Jun. 2004, [Reviewed]

Impurity-induced ferromagnetism and impurity states in Nd1/2Ca1/2(Mn0.95M0.05)O-3
Y Moritomo; K Murakami; H Ishikawa; M Hanawa; A Nakamura; K Ohoyama
PHYSICAL REVIEW B, Jun. 2004, [Reviewed]

Quadrupolar and magnetic interactions in antiferroquadrupolar ordering compound DyB2C2 studied by Y dilution
K Indoh; A Tobo; K Ohoyama; H Yamauchi; H Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 2004, [Reviewed]

Unusual antiferromagnetic properties affected by antiferroquadrupolar interaction in TbB2C2
K. Kaneko; N. Metoki; K. Ohoyama; H. Onodera; Y. Yamaguchi
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, May 2004, [Reviewed]

A new phase boundary in quadrupolar ordered phase of Dy0.9Gd0.1B2C2
H Onodera; J Kaya; H Yamauchi; K Indoh; A Tobo; K Ohoyama; Y Yamaguchi
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, May 2004, [Reviewed]

Anomalous octahedral distortion and multiple phase transitions in the metal-ordered manganite YBaMn2O6
T Nakajima; H Kageyama; M Ichihara; K Ohoyama; H Yoshizawa; Y Ueda
JOURNAL OF SOLID STATE CHEMISTRY, Mar. 2004, [Reviewed]

Magnetic phase diagrams of antiferroquadrupolar ordering compound DyB2C2
K Indoh; A Tobo; H Yamauchi; K Ohoyama; H Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Mar. 2004, [Reviewed]

Magnetic properties of y1-xDyxMn6Sn 6 alloys
T. Hori; H. Shiraishi; K. Indoh; K. Ohoyama; A. Tobo; Y. Yamaguchi; T. Sakon; M. Motokawa, Elsevier
Journal of Magnetism and Magnetic Materials, 2004

Development of magnetic correlations around the transition temperatures in ErB2C2
K. Ohoyama; A. Hino; K. Indoh; A. Tobo; H. Onodera; Y. Yamaguchi, Elsevier
Journal of Magnetism and Magnetic Materials, 2004

Quadrupole and hexadecapole ordering in DyB2C2: Direct observation with resonant x-ray diffraction
Y Tanaka; T Inami; SW Lovesey; KS Knight; F Yakhou; D Mannix; J Kokubun; M Kanazawa; K Ishida; S Nanao; T Nakamura; H Yamauchi; H Onodera; K Ohoyama; Y Yamaguchi
PHYSICAL REVIEW B, Jan. 2004, [Reviewed]

Crystal and Magnetic Structures of Layered Perovskite CaNdFeO4
OYAMA S; WAKESHIMA M; HINATSU Y; OHOYAMA K
J. Phys., Condens.Matter, 2004

Spin-reorientation Transition of SrNdFeO4
OYAMA S; WAKESHIMA M; HINATSU Y; OHOYAMA K
J. Physics., Condens.Matter, 2004

Ground state properties of the A-site ordered manganites, RBaMn2O6 (R = La, Pr and Nd)
T Nakajima; H Kageyama; H Yoshizawa; K Ohoyama; Y Ueda
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 2003, [Reviewed]

Magnetic properties of tetragonal Ce1-xLuxB2C2 (<= x <= 0.31) compounds
A Tobo; K Ishimoto; J Konno; K Ohoyama; K Kaneko; Y Yamaguchi; H Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 2003, [Reviewed]

Magnetic structure of pyrochlore-type Er2Ru2O7
Nobuyuki Taira; Makoto Wakeshima; Yukio Hinatsu; Aya Tobo; Kenji Ohoyama
Journal of Solid State Chemistry, Nov. 2003, [Reviewed]

Specific heat and neutron diffraction study on quaternary sulfides BaNd2CoS5 and BaNd2ZnS5
Makoto Wakeshima; Nobuyuki Taira; Yukio Hinatsu; Aya Tobo; Kenji Ohoyama; Yasuo Yamaguchi
Journal of Solid State Chemistry, Aug. 2003, [Reviewed]

Anomalous magnetic scattering in tetragonal RB2C2 (R = rare earth) observed by means of neutron diffraction
K. Ohoyama; K. Indoh; A. Tobo; K. Kaneko; H. Onodera; Y. Yamaguchi
Journal of Physics Condensed Matter, 23 Jul. 2003

Magnetic ordering affected by multipolar interactions in Ho1-xTbxB2C2
K. Ido; A. Tobo; K. Ohoyama; H. Onodera; Y. Yamaguchi
Journal of Physics Condensed Matter, 23 Jul. 2003

Spin-glass behaviour of Ce0.69Lu0.31B2C2
K Ishimoto; J Konno; A Tobo; K Kaneko; K Ohoyama; H Onodera; Y Yamaguchi
JOURNAL OF PHYSICS-CONDENSED MATTER, Jul. 2003, [Reviewed]

Neutron scattering study on the antiferroquadrupolar order of DyB2C2 under magnetic fields
H Yamauchi; K Ohoyama; S Katano; M Matsuda; K Indoh; H Onodera; Y Yamaguchi
JOURNAL OF PHYSICS-CONDENSED MATTER, Jul. 2003, [Reviewed]

The concentration-temperature phase diagram of CexLa1-xB2C
A Tobo; H Yamauchi; E Kishi; M Sakata; K Ishimoto; K Ohoyama; H Onodera; Y Yamaguchi
JOURNAL OF PHYSICS-CONDENSED MATTER, Jul. 2003, [Reviewed]

Magnetic phase diagrams of Dy0.8Gd0.2B2C2
H Onodera; K Indoh; J Kaya; M Sakata; H Yamauchi; A Tobo; K Ohoyama; Y Yamaguchi
JOURNAL OF PHYSICS-CONDENSED MATTER, Jul. 2003, [Reviewed]

Addendum to "doping-dependent magnetic structure of Tb 1-xCaxMnO3"
Akihiko Machida; Yutaka Moritomo; Kenji Ohoyama
Journal of the Physical Society of Japan, May 2003

High-temperature neutron powder diffraction study of cerium dioxide CeO2 up to 1770 K
M Yashima; D Ishimura; Y Yamaguchi; K Ohoyama; K Kawachi
CHEMICAL PHYSICS LETTERS, May 2003, [Reviewed]

Neutron-diffraction study of the unusual ordered phases of Ce0.75La0.25B6
K Iwasa; K Kuwahara; M Kohgi; P Fischer; A Donni; L Keller; TC Hansen; S Kunii; N Metoki; Y Koike; K Ohoyama
PHYSICA B-CONDENSED MATTER, May 2003, [Reviewed]

Magnetic phase diagrams and lattice structure of Nd1/2Ca 1/2(Mn1-yMy)O3 (M = Ru, Cr and Sc)
Sheng Xu; Yutaka Moritomo; Akihiko Machida; Kenji Ohoyama; Arao Nakamura
Journal of the Physical Society of Japan, Apr. 2003

Long Periodic Magnetic Structure in CeB2C2　　　　　　　　　　　　　　　
k.ohoyama; k.kaneko; a.tobo; k.ishimoto; h.onodera; y.yamaguchi
Journal of the Physical Society of Japan, 01 Apr. 2003, [Reviewed]

New stacking variations of the charge and orbital ordering in the metal-ordered manganite YBaMn2O6
H Kageyama; T Nakajima; M Ichihara; Y Ueda; H Yoshizawa; K Ohoyama
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Feb. 2003, [Reviewed]

Ferromagnetic spin-ordering in photo-active RbMn[Fe(CN)(6)]
Y Moritomo; A Kurik; K Ohoyama; H Tokoro; S Ohkosh; K Hashimoto; N Hamada
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Feb. 2003, [Reviewed]

Doping-dependent magnetic structure of Tb1-xCa xMnO3
Akihiko Machida; Yutaka Moritomo; Kenji Ohoyama; Arao Nakamura
Journal of the Physical Society of Japan, Jan. 2003

High-Temperature Structural Phase Transitions in Strontium Zirconate
OH-UCHI Kenjiro; OKUBE Maki; YASHIMA Masatomo; SAKAI Atsushi; MORI Mizuki; ISHIMURA Daiju; TANAKA Masahiko; OHOYAMA Kenji; MORI Takeharu; YOSHIASA Akira, We have investigated in situ the phase transitions of the strontium zirconate by neutron and high-resolution synchrotron radiation powder diffraction techniques. The unit-cell and structural parameters were refined by the Rietveld method. The sequence of existing phases was confirmed to be Pnma (orthorhombic), Imma (orthorhombic), I4/mcm (tetragonal) and Pm-3m (cubic). The results indicated that the transitions from Pnma to Imma and from I4/mcm to Pm-3m are continuous. The Imma and I4/mcm phases coexisted at 1149K, indicating that the Imma-I4/mcm phase transition is of first order. The tilt angle of ZrO₆ octahedron in Pnma, Imma and I4/mcm decreased with increasing temperature. The tilt angle of ZrO₆ octahedron in the tetragonal phase is taken to be the order parameter and its temperature variation is consistent with a tricritical phase transition., The Ceramic Society of Japan
Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan, 2003

Magnetic excitations in the Kondo semiconductor Ybl-'Lu.B12
K. Ohoyama; F. Iga; T. Takabatake; S. Itoh; T. Kamiyama
KENS REPORT-XIV 2001-2002, KEK Pregress Report, 2003

Crystal Electric Field in TmB2C2
K Ohoyama; H Onodera; K Indoh; T. Kamiyama; S. Itoh; Y. Yamaguchi
KENS REPORT-XIV 2001-2002, KEK Pregress Report, 2003

Diffuse scattering due to Geometrical Frustration in Mn3O4
Akira KURIKI; Yutaka MORITOMO; Kenji OHOYAMA; Kenichi KATO; Arao NAKAMURA
Journal of the Physical Society of Japan, 2003, [Reviewed]

Neutron diffraction study on the Heusler compound Co1.50TiSn and its nitrogenation products
T Nobata; G Nakamoto; M Kurisu; Y Makihara; K Ohoyama; M Ohashi
JOURNAL OF ALLOYS AND COMPOUNDS, Dec. 2002, [Reviewed]

Neutron-scattering studies of the field-induced ordered state of TbB2C2
K. Kaneko; S. Katano; M. Matsuda; K. Ohoyama; H. Onodera; Y. Yamaguchi
Applied Physics A: Materials Science and Processing, Dec. 2002

Magnetic structure of tetragonal TmB2C2
K. Ohoyama; K. Kaneko; K. Indoh; A. Tobo; H. Onodera; Y. Yamaguchi
Applied Physics A: Materials Science and Processing, Dec. 2002

Magnetic and calorimetric studies on 6H-perovskite Ba3TbRu2O9
Doi Y; Wakeshima M; Hinatsu Y; Tobo A; Ohoyama K; Yamaguchi Y
JOURNAL OF ALLOYS AND COMPOUNDS, 07 Oct. 2002, [Reviewed]

Crystal structure and magnetic properties of hexagonal RMnO3 (R = Y, Lu, and Sc) and the effect of doping
T. Katsufuji; M. Masaki; A. Machida; M. Moritomo; K. Kato; E. Nishibori; M. Takata; M. Sakata; K. Ohoyama; K. Kitazawa; H. Takagi
Physical Review B - Condensed Matter and Materials Physics, 01 Oct. 2002

Magnetic correlations in the Cd-Mg-Tb icosahedral quasicrystal
Taku J. Sato; Hiroyuki Takakura; Junqing Guo; An Pang Tsai; Taku J. Sato; Hiroyuki Takakura; Junqing Guo; An Pang Tsai; Kenji Ohoyama
Journal of Alloys and Compounds, 14 Aug. 2002, [Reviewed]

Magnetic Order-Order Transition in Tetragonal ErB2C2
Kenji Ohoyama; Kentaro Indoh; Aya Tobo; Hideya Onodera; Yasuo Yamaguchi
Journal of the Physical Society of Japan, Jul. 2002

Magnetic properties of Ce3PbC
M. Kosaka; S. Koiwai; Y. Uwatoko; N. Môri; H. Onodera; K. Ohoyama; H. Abe; H. Kitazawa; G. Kido; T. Kamiyama; H. Noda; T. Omura, Elsevier BV
Physica B: Condensed Matter, Mar. 2002, [Reviewed]

Phase separation and ferromagnetic transition in B-site substituted Nd1/2Ca1/2MnO3
A. Machida; Y. Moritomo; K. Ohoyama; T. Katsufuji; A. Nakamura
Physical Review B - Condensed Matter and Materials Physics, 01 Feb. 2002

Phase separation and ferromagnetic transition in B-site substituted (formula presented)
A. Machida; Y. Moritomo; K. Ohoyama; T. Katsufuji; A. Nakamura
Physical Review B - Condensed Matter and Materials Physics, 2002, [Reviewed]

(formula presented) distortion and spin ordering in (formula presented) (formula presented) and 0.65)
Sh. Xu; Y. Moritomo; A. Machida; K. Ohoyama; K. Kato; A. Nakamura
Physical Review B - Condensed Matter and Materials Physics, 2002, [Reviewed]

MnO6 distortion and spin ordering in Nd1-xSrxMnO3 (x=0.55 and 0.65)
Xu, S; Moritomo, Y; Machida, A; Ohoyama, K; Kato, K; Nakamura, A
Physical Review B, 2002

Crystal structure and magnetic properties of hexagonal (formula presented) Lu, and Sc) and the effect of doping
T. Katsufuji; M. Masaki; A. Machida; M. Moritomo; K. Kato; E. Nishibori; M. Takata; M. Sakata; K. Ohoyama; K. Kitazawa; H. Takagi
Physical Review B - Condensed Matter and Materials Physics, 2002

Phase transitions in the pseudo-binary compounds Ho1-xTb xB2C2
Kaihei Ido; Hideya Onodera; Kenji Ohoyama; Aya Tobo; Yasuo Yamaguchi, Physical Society of Japan
Journal of the Physical Society of Japan, 2002

Neutron Scattering Study on the Orbital Order of DyB2C2 in Magnetic Fields
Hiroki Yamauchi; Kenji Ohoyama; Masugu Sato; Susumu Katano; Hideya Onodera; Yasuo Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jan. 2002, [Reviewed]

Proposal for a chopper spectrometer with very high energy resolution
K. Ohoyama; S. Itoh; T. Otomo; T. Osakabe; J. Suzuki; M. Matsuda; K. Kuwahara; M. Arai
Appl. Phys. A, 2002, [Reviewed]

Neutron Investigation of Tb1-xCaxMnO3 (x ≥ 0.5)
Akihiko Machida; Yutaka Moritomo; Kenji Ohoyama; Arao Nakamura
Journal of the Physical Society of Japan, Dec. 2001

Systematic study on crystal structures in tetragonal RB2C2 (R=rare earth) compounds
K Ohoyama; K Kaneko; K Indoh; H Yamauchi; A Tobo; H Onodera; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Nov. 2001, [Reviewed]

Antiferroquadrupolar ordering in the pseudo-binary tetragonal compounds Ho1-xDyxB2C2
H Shimada; H Onodera; H Yamauchi; A Tobo; K Ohoyama; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 2001, [Reviewed]

Novel magnetic behavior in RB2C2: competitive coexistence of antiferroquadrupolar and antiferromagnetic order
H Yamauchi; H Onodera; K Kaneko; A Tobo; K Ohoyama; Y Yamaguchi
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, May 2001, [Reviewed]

Crystal Structures and Magnetic Properties of the 6H-Perovskite Ba₃LnRu₂O₉ (共著)
DOI Y; WAKESHIMA M; HINATSU Y; TOBO A; OHOYAMA K; YAMAGUCHI Y
J. Mater. Chem., 2001

Magnetic correlations in the Zn-Mg-rare-earth icosahedral quasicrystals
Taku J. Sato; Hiroyuki Takakura; An Pang Tsai; Kenji Ohoyama; Kaoru Shibata; Ken H. Andersen
Materials Science and Engineering A, 15 Dec. 2000, [Reviewed]

Magnetic-field-induced martensitic transformation in Ni2MnGa-based alloys (vol 69, pg 3485, 2000)
K Inoue; K Enami; Y Yamaguchi; K Ohoyama; Y Morii; Y Matsuoka; K Inoue
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 2000, [Reviewed]

Electron doping effects in conducting Sr2FeMoO6
Y. Moritomo; Sh Xu; T. Akimoto; A. Machida; N. Hamada; K. Ohoyama; E. Nishibori; M. Takata; M. Sakata
Physical Review B - Condensed Matter and Materials Physics, 01 Dec. 2000

Magnetic-field-induced martensitic transformation in Ni2MnGa-based alloys
K Inoue; K Enami; Y Yamaguchi; K Ohoyama; Y Morii; Y Matsuoka; K Inoue
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Nov. 2000, [Reviewed]

Pressure effect and neutron scattering study on A(x) HfNCl (A; alkali metals and organic molecules)
S Shamoto; K Iizawa; T Koiwasaki; M Yasukawa; S Yamanaka; O Petrenko; SM Bennington; H Yoshida; K Ohoyama; Y Yamaguchi; Y Ono; Y Miyazaki; T Kajitani
PHYSICA C, Nov. 2000, [Reviewed]

Microdomain structure of Cr-doped manganites: Nd1/2Ca1/2(Mn,Cr)O3
Akihiko Machida; Yutaka Moritomo; Eiji Nishibori; Masaki Takata; Makoto Sakata; Kenji Ohoyama; Shigeo Mori; Naoki Yamamoto; Arao Nakamura
Journal of the Physical Society of Japan, Nov. 2000

Characteristic magnetic structure due to antiferroquadrupolar ordering in (HoB2C2)-B-11
K Ohoyama; H Yamauchi; A Tobo; H Onodera; H Kadowaki; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Oct. 2000, [Reviewed]

Phase separation and insulator-metal behavior of doped manganites
A Machida; Y Moritomo; E Nishibori; M Takata; M Sakata; K Ohoyama; S Mori; N Yamamoto; A Nakamura
PHYSICAL REVIEW B, Aug. 2000, [Reviewed]

Antiferromagnetic structure with the uniaxial anisotropy in the tetragonal LaB2C2 type compound, NdB2C2
K Ohoyama; T Onimaru; H Onodera; H Yamauchi; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Aug. 2000, [Reviewed]

Reconsideration of the lattice effect on the charge-ordering transition of doped manganites
A Machida; Y Moritomo; K Ohoyama; S Okamoto; S Ishihara; S Maekawa; A Nakamura
PHYSICAL REVIEW B, Jul. 2000, [Reviewed]

Possible field-induced antiferroquadrupolar ordered phase in HoB2C2
H Yamauchi; H Onodera; K Ohoyama; Y Yamaguchi
PHYSICA B, Jun. 2000, [Reviewed]

Effect of pressure on the ferroquadrupolar compound TmAu2
M Kosaka; Y Uwatoko; T Seino; H Onodera; K Ohoyama; Y Yamaguchi; M Ohashi
PHYSICA B, Jun. 2000, [Reviewed]

Effects of Y dilution on the antiferroquadrupolar ordering in the tetragonal compound DyB2C2
S Sako; H Onodera; H Yamauchi; K Indoh; A Tobo; K Ohoyama; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 2000, [Reviewed]

Orbital stability in the spin-ordered phase of bilayer manganites as investigated by neutron-diffraction measurements
T Akimoto; Y Moritomo; K Ohoyama; S Okamoto; S Ishihara; S Maekawa; K Hirota; A Nakamura
PHYSICAL REVIEW B, May 2000, [Reviewed]

Possibility of controlling the shape memory effect by magnetic field
K Inoue; K Enami; M Igawa; Y Yamaguchi; K Ohoyama; Y Morii; Y Matsuoka; K Inoue
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2000

Magnetic susceptibility in 2D superconductor NaxHfNCI system
SI Shamoto; K Iizawa; Y Asano; K Ohoyama; T Kajitani
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2000, [Reviewed]

Neutron powder diffraction study on B-C network atomic arrangements in tetragonal CeB2C2
Koji Kaneko; Kenji Ohoyama; Hideya Onodera; Yasuo Yamaguchi, Physical Society of Japan
Journal of the Physical Society of Japan, 2000

Antiferromagnetic spin correlations in the Zn-Mg-Ho icosahedral quasicrystal
Taku J. Sato; Hiroyuki Takakura; An Pang Tsai; Kaoru Shibata; Kenji Ohoyama
Physical Review B - Condensed Matter and Materials Physics, 2000, [Reviewed]

Magnetic and Neutron Diffraction Study on Iridium((]G0004[))Perovskites Sr=LnIrO₆(Ln=Ce,Tb)(共著)
HARADA D; WAKESHIMA M; HINATSU Y; OHOYAMA K; YAMAGUCHI Y
Journal fo Physics: Condensed Matter, 2000

Magnetic properties of the tetragonal compounds CeB2C2 and PrB2C2
H. Onodera; K. Kaneko; T. Onimaru; K. Ohoyama; Y. Yamaguchi; H. Kobayashi; Y. Nemoto; T. Goto
J. Magn. Magn. Mater., 2000, [Reviewed]

Spin dynamics in S = 3/2 one-dimensional Heisenberg antiferromagnets CsVCl3 and CsVBr3
Shinichi Itoh; Yasuo Endoh; Kazuhisa Kakurai; Hidekazu Tanaka; Steve M. Bennington; Toby G. Perring; Kenji Ohoyama; Mark J. Harris; Kenji Nakajima; Chris D. Frost, The spin dynamics in S=3/2, one-dimensional (ID) Heisenberg antiferromagnets, CsVCl3 and CsVBr3, was investigated using inelastic neutron scattering. The magnetic excitations were measured at temperatures above the three-dimensional ordering temperature in order to discuss the ID properties in the present systems. We report on the spin dynamics at low temperatures and its temperature (7) dependence. From the observed dispersion relation, using the renormalization constant calculated from the quantum Monte Carlo method, we obtained the exchange constant (J) in good agreement with those taken from bulk-susceptibility measurements. The observed structure factor was well described by that calculated from the parameters describing the dispersion relation. The energy width (・｡) was independent of the ID momentum transfer (q) at large energy transfers, however, its q dependence exhibits the minimum at the magnetic zone center. The parameters describing the energy scale in the spin dynamics at low T were found to be scaled by J. We also investigated the T dependence of the spin dynamics: ・｡(T) can be scaled by J, ・｡(T) at T>J is proportional to T as predicted by classical theory but at T>J, F decreases with decreasing T and becomes finite. On the other hand, we found that ・ﾈ(T) is proportional to T at any T. The scaling by J in the dynamics at low T as well as ・｡(T) suggests that the observed spin dynamics is of ID origin. We conclude that the spin dynamics at high temperatures T>J, is well described by classical theory, ho
Physical Review B - Condensed Matter and Materials Physics, 01 Dec. 1999, [Reviewed]

Evidence of antiferroquadrupolar ordering of DyB2C2
Y Tanaka; T Inami; T Nakamura; H Yamauchi; H Onodera; K Ohoyama; Y Yamaguchi
JOURNAL OF PHYSICS-CONDENSED MATTER, Nov. 1999, [Reviewed]

Hole-concentration-induced transformation of the magnetic and orbital structures in Nd1-xSrxMnO3
R Kajimoto; H Yoshizawa; H Kawano; H Kuwahara; Y Tokura; K Ohoyama; M Ohashi
PHYSICAL REVIEW B, Oct. 1999, [Reviewed]

Magnetic structure modified by the quadrupolar interaction in DyB2C2
H Yamauchi; H Onodera; M Ohashi; K Ohoyama; T Onimaru; M Kosaka; Y Yamaguchi, Elsevier BV
Journal of Physics and Chemistry of Solids, Sep. 1999, [Reviewed]

Hydrogen in beta-ZrNCl
S Shamoto; K Iizawa; T Kato; M Yamada; S Yamanaka; K Ohoyama; M Ohashi; Y Yamaguchi; T Kajitani
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Aug. 1999, [Reviewed]

Short-range spin order and magnetic excitations in diluted magnetic semiconductor Zn0.568Mn0.432Te
Y Ono; S Shamoto; K Sato; T Kamiya; T Sato; Y Oka; Y Yamaguchi; K Ohoyama; Y Morii; T Kajitani
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Aug. 1999, [Reviewed]

Multi-magnetic-mode in (Cr1-xMnx)(2)As
Y Yamaguchi; K Ohoyama; T Kanouchi; M Ohashi; K Ishimoto
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Aug. 1999, [Reviewed]

Crystal structure of tetragonal (CeB2C2)-B-11
T Onimaru; H Onodera; K Ohoyama; H Yamauchi; M Ohashi; Y Yamaguchi
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, Aug. 1999, [Reviewed]

Neutron powder diffraction on (CeB2C2)-B-11 and (NdB2C2)-B-11: A new model for the tetragonal crystal structure
T Onimaru; H Onodera; K Ohoyama; H Yamauchi; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jul. 1999, [Reviewed]

Antiferroquadrupolar ordering and magnetic properties of the tetragonal DyB2C2 compound
H Yamauchi; H Onodera; K Ohoyama; T Onimaru; M Kosaka; M Ohashi; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 1999, [Reviewed]

Hole-concentration-induced transformation of the magnetic and orbital structures in Nd1-xSrxMnO3
R. Kajimoto; H. Yoshizawa; H. Kawano; H. Kuwahara; Y. Tokura; K. Ohoyama; M. Ohashi
Physical Review B - Condensed Matter and Materials Physics, 1999, [Reviewed]

Magnetic excitations in the Kondo compound CeRhSb
K. Ohoyama; M. Kohgi; T. Yoshino; T. Takabatake; W. Hahn; R. S. Eccleston, Elsevier
Physica B: Condensed Matter, 1999

Magnetism of CaNiN
S. Shamoto; T. Kato; K. Ohoyama; M. Ohashi; Y. Yamaguchi; T. Kajitani, Elsevier Science Ltd
Journal of Physics and Chemistry of Solids, 1999

Crystal field splitting in the heavy fermion compounds Ce2X (X = Sb,Bi)
K. Ohoyama; H. Hayashi; H. Onodera; M. Ohashi; Y. Yamaguchi; M. Kohgi; T. Suzuki; K. Hirota; S. Ikeda, Elsevier Science Ltd
Journal of Physics and Chemistry of Solids, 1999

Structural study on novel two-dimensional superconductor NaxHfNCl
S. Shamoto; K. Iizawa; M. Yamada; K. Ohoyama; Y. Yamaguchi; T. Kajitani, Elsevier Science Ltd
Journal of Physics and Chemistry of Solids, 1999

Neutron scattering study of antiferromagnetic correlations in the Zn-Mg-Ho icosahedral quasicrystal
Taku J. Sato; Hiroyuki Takakura; An Pang Tsai; Kaoru Shibata; Kenji Ohoyama; Ken H. Andersen
Materials Research Society Symposium - Proceedings, 1999, [Reviewed]

Magnetic ordering of the edge-sharing CuO2 chains in Ca2Y2Cu5O10
M Matsuda; K Ohoyama; M Ohashi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jan. 1999, [Reviewed]

Neutron scattering study of the Zn-Mg-Ho icosahedral quasicrystal
T. J. Sato; H. Takakura; A. P. Tsai; K. Shibata; K. Ohoyama; K. H. Andersen
Journal of Physics and Chemistry of Solids, 1999, [Reviewed]

Magnetic structure of C14 Laves phase DyMn2
K Inoue; Y Nakamura; Y Yamaguchi; K Ohoyama; M Ohashi; AV Tsvyashchenko; L Fomicheva
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 1998, [Reviewed]

Structures of β-ZrNCl and superconducting Li0.16ZrNCl: double honeycomb lattice superconductor
T. Kajitani; K. Ohoyama; S. Shamoto; Y. Yamaguchi; M. Ohashi; Y. Miyazaki; Y. Ono; T. Kato
Physica C: Superconductivity and its Applications, 1998, [Reviewed]

Neutron-scattering study of DyB6
K. Takahashi; H. Nojiri; K. Ohoyama; M. Ohashi; Y. Yamaguchi; M. Motokawa; S. Kunii, Elsevier
Journal of Magnetism and Magnetic Materials, 1998

Quadrupole ordering and magnetic properties of tetragonal TmAg2
M. Kosaka; H. Onodera; K. Ohoyama; M. Ohashi; Y. Yamaguchi; S. Nakamura; T. Goto; H. Kobayashi; S. Ikeda
PHYSICAL REVIEW B, 1998, [Reviewed]

Lattice effects on the charge-ordering transition in R0.5Sr1.5MnO4
Y Moritomo; A Nakamura; S Mori; N Yamamoto; K Ohoyama; M Ohashi
PHYSICAL REVIEW B, Dec. 1997, [Reviewed]

Ferromagnetic-antiferromagnetic transition of itinerant electron magnets Mn3-xFexSi
H. Miki; K. Ohoyama; H. Onodera; H. Yamauchi; Y. Yamaguchi; H. Nojiri; M. Motokawa; S. Funahashi; S. Tomiyoshi, Elsevier
Physica B: Condensed Matter, Jul. 1997, [Reviewed]

Magnetic excitations in the antiferromagnet Fe-doped Mn3Si
H. Miki; K. Ohoyama; Y. Yamaguchi; K. Nakajima; S. Tomiyoshi, Elsevier
Physica B: Condensed Matter, 1997, [Reviewed]

Neutron diffraction study of C14-Laves-phase, TbMn2 and DyMn2
K. Inoue; Y. Nakamura; Y. Yamaguchi; K. Ohoyama; S. Funahashi; A. V. Tsvyashchenko; L. Fomicheva, Elsevier
Physica B: Condensed Matter, 1997

HERMES, the high-efficiency multipurpose powder diffractometer
K. Ohoyama; T. Kanouchi; K. Nemoto; M. Ohashi; T. Kajitani; Y. Yamaguchi, Elsevier
Physica B: Condensed Matter, 1997

Magnetic and structural phase transition in heavy rare-earth compound DyB6
K. Takahashi; H. Nojiri; K. Ohoyama; M. Ohashi; Y. Yamaguchi; S. Kunii; M. Motokawa, Elsevier
Physica B: Condensed Matter, 1997

NEUTRON-SCATTERING FROM LOW-CARRIER-DENSITY STRONGLY CORRELATED ELECTRON-SYSTEMS
M KOHGI; T OSAKABE; K OHOYAMA; T SUZUKI
PHYSICA B, Aug. 1995, [Reviewed]

Anomalous short-range spin correlations in Yb monopnictides
K. Ohoyama; T. Osakabe; A. Dönni; M. Kohgi; A. Oyamada; T. Suzuki
Physica B: Physics of Condensed Matter, Aug. 1995, [Reviewed]

ANISOTROPIC EXCHANGE INTERACTION IN CR2AS
K ISHIMOTO; M OKONOGI; K OHOYAMA; K NAKAJIMA; M OHASHI; H YAMAUCHI; Y YAMAGUCHI; S FUNAHASHI
PHYSICA B, Aug. 1995, [Reviewed]

Structural Evolution of Spin-Peierls Material CuGeO[3] Studied by Neutron Scattering
Arai Masatoshi; Fujita Masaki; Ubukata Katsunori; Ohta Hitoshi; Motokawa Mitsuhiro; Otomo Toshiya; Ohoyama Kenji; Mino Michinobu; Akimitsu Jun; Fujita Osamu
Journal of Magnetism and Magnetic Materials, 1995, [Reviewed]

NEUTRON-DIFFRACTION STUDY OF ANTIFERROMAGNETIC ORDER IN THE KONDO COMPOUND CEPDSN
H KADOWAKI; M KOHGI; K OHOYAMA; M KASAYA
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 1994, [Reviewed]

Neutron Scattering Studies on Spin-Peierls Material CuGeO[3]
Arai Masatoshi; Fujita Masaki; Ubukata Katsunori; Bokui Takahiro; Tabata Kiyoshi; Ohta Hitoshi; Motokawa Mitsuhiro; Otomo Toshiya; Ohoyama Kenji; Mino Michinobu; Akimitsu Jun; Fujita Osamu
Journal of the Physical Society of Japan, 1994, [Reviewed]

NEUTRON-SCATTERING STUDIES OF CE(ZN1-XCUX)2
T OSAKABE; M KOHGI; K OHOYAMA; T KITAI
PHYSICA B-CONDENSED MATTER, May 1993, [Reviewed]

NEUTRON-SCATTERING STUDY OF CENISN
M KOHGI; K OHOYAMA; T OSAKABE; M KASAYA; T TAKABATAKE; H FUJII
PHYSICA B-CONDENSED MATTER, May 1993, [Reviewed]

SPIN DYNAMICS OF YBX (X = N, P, AS)
K OHOYAMA; M KOHGI; T OTOMO; T OSAKABE; A OYAMADA; T SUZUKI
PHYSICA B-CONDENSED MATTER, May 1993, [Reviewed]

ANOMALOUS CRYSTAL-FIELD SPLITTING IN YBN
K OHOYAMA; M KOHGI; T NAKANE; M ARAI; AD TAYLOR; A OYAMADA; T SUZUKI
PHYSICA B, Jun. 1992, [Reviewed]

Magnetic properties of the dense Kondo compounds CePdSn and YbNiSn
M. Kasaya; T. Tani; K. Ohoyama; M. Kohgi; Y. Isikawa
Journal of Magnetism and Magnetic Materials, 02 Feb. 1992

NEUTRON-SCATTERING STUDIES OF CETSN (T = NI, PD)
M KOHGI; K OHOYAMA; T OSAKABE; M KASAYA
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Feb. 1992, [Reviewed]

CRYSTAL-FIELD EXCITATIONS IN YB MONOPNICTIDES
M KOHGI; K OHOYAMA; A OYAMADA; T SUZUKI; M ARAI
PHYSICA B, Apr. 1990, [Reviewed]

軽元素ドープ系材料での新しい原子イメージング法 ー白色中性子ホログラフィー ー＾　　　　　　　　　　　　　　　
大山研司、林 好一
日本物理学会誌, Jun. 2022, [Reviewed], [Invited]
Lead

新しい水素イメージング法への挑戦 白色中性子ホログラフィー　　　　　　　　　　　　　　　
大山研司、林 好一
日本結晶学会誌, 31 May 2022, [Reviewed], [Invited]

J‐PARC MLFにおける偏極³He中性子スピンフィルターの開発
吉良弘; 林田洋寿; 茂吉武人; 宗像孝司; 中尾朗子; 鈴木淳市; 加倉井和久; 奥隆之; 酒井健二; 廣井孝介; 高田慎一; 大原高志; 鬼柳亮嗣; 猪野隆; 大山研司; 大河原学
日本中性子科学会年会講演概要集, 2017

偏極中性子散乱装置POLANOにおける³He中性子スピンフィルターの開発 II
大河原学; 藤田全基; 南部雄亮; 猪野隆; 横尾哲也; 伊藤晋一; 吉良弘; 林田洋寿; 加倉井和久; 酒井健二; 廣井孝介; 奥隆之; 大山研司
日本中性子科学会年会講演概要集, 2016

24aAD-2 High Magnetic Field Neutron Diffractions on Multiferroic MnWO_4 II
Narumi Yasuo; Kihara Takumi; Ohoyama Kenji; Nojiri Hiroyuki; Haruki Kohei; Kimura Tsuyoshi
Meeting Abstracts of the Physical Society of Japan, 2015

偏極中性子散乱装置POLANOにおける³He中性子スピンフィルターの開発
大河原学; 南部雄亮; 藤田全基; 猪野隆; 横尾哲也; 伊藤晋一; 吉良弘; 林田洋寿; 酒井健二; 廣井孝介; 奥隆之; 加倉井和久; 大山研司
日本中性子科学会年会講演概要集, 2015

Development of an in-situ spin-exchange optical pumping 3He neutron spin filter　　　　　　　　　　　　　　　
T. Oku; H. Hayashida; H. Kira; K. Sakai; K. Hiroi; T. Shinohara; Y. Sakaguchi; T. Ino; M. Ohkawara; K. Ohoyama; L.-J. Chang; M. Nakamura; J. Suzuki; H.M. Shimizu; K. Aizawa; M. Arai; Y. Endoh; K. Kakurai
Proc. of the 21st Meeting of the International Collaboration on Advanced Neutron Sources, Sep. 29-Oct. 3, 2014, Mito, 2015

30pAB-3 Installation of newly proposed polarized neutron spectrometer POLANO in J-PARC II
Yokoo T.; Ohoyama K.; Itoh S.; Iwasa K.; Kaneko N.; Okawara M.; Suzuki J.; Muroya T.; Sugai S.; Aizawa K.
Meeting abstracts of the Physical Society of Japan, 05 Mar. 2014

オンビームSEOP型³He中性子偏極フィルターの開発と応用
奥隆之; 林田洋寿; 酒井健二; 篠原武尚; 中村充孝; 相澤一也; 新井正敏; 遠藤康夫; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 猪野隆; 平賀晴弘; 清水裕彦; 大河原学; 大山研司
物構研サイエンスフェスタ要旨集, 2014

In‐situ SEOP方式偏極³He中性子スピンフィルターの応用と磁気シールドの開発
吉良弘; 坂口佳史; 鈴木淳市; 奥隆之; 林田洋寿; 酒井健二; 中村充孝; 新井正敏; 遠藤康夫; 加倉井和久; 有本靖; 猪野隆; 大河原学; 大山研司; 清水裕彦
物構研サイエンスフェスタ要旨集, 2014

偏極³He中性子スピンフィルターを使った偏極中性子小角散乱デモ実験
吉良弘; 林田洋寿; 岩瀬裕希; 大石一城; 鈴木淳市; 奥隆之; 酒井健二; 廣井孝介; 高田慎一; 猪野隆; 大山研司; 大河原学; 加倉井和久; 相澤一也; 新井正敏
日本中性子科学会年会講演概要集, 2014

大強度パルス中性子源における3He中性子スピンフィルターの実用化研究　　　　　　　　　　　　　　　
奥隆之; 吉良弘; 林田洋寿; 酒井健二; 廣井孝介; 篠原武尚; 猪野隆; 大河原学; 大山研司; 高田慎一; 大石一城; 岩瀬裕希; 宮田登; 阿久津和宏; 坂口佳史; 武田全康; 鈴木淳市; 相澤一也; 新井正敏; 加倉井和久
日本中性子科学会誌「波紋」, 2014

27aKE-4 Installation of newly proposed polarized neutron spectrometer POLANO in J-PARC
Yokoo T.; Nanbu Y.; Ohoyama K.; Itoh S.; Suzuki J.; Sato T.J.; Iwasa K.; Kimura H.; Kaneko N.; Okawara M.
Meeting Abstracts of the Physical Society of Japan, 2013

オンビームSEOP型³He中性子偏極フィルターの開発と応用
奥隆之; 林田洋寿; 酒井健二; 篠原武尚; 中村充孝; 相澤隆; 新井正敏; 遠藤康夫; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 猪野隆; 平賀晴弘; 清水裕彦; 大河原学; 大山研司
日本中性子科学会年会講演概要集, 2013

In‐situ SEOP方式偏極³He中性子スピンフィルターの応用と磁気シールドの開発
吉良弘; 坂口佳史; 鈴木淳市; 奥隆之; 林田洋寿; 酒井健二; 中村充孝; 新井正敏; 遠藤康夫; 加倉井和久; 有本靖; 猪野隆; 大河原学; 大山研司; 清水裕彦
日本中性子科学会年会講演概要集, 2013

Precision magnetic field mapping for the ³He neutron spin filter
Takashi Ino; Yasushi Arimoto; Hiroshi Kira; Yoshifumi Sakaguchi; Takenao Shinohara; Kenji Sakai; Takayuki Oku; Kazuhisa Kakurai; Kenji Ohoyama
Physics Procedia, 01 Jan. 2013

Magnetic Shield Design of In-situ SEOP Polarized 3He Neutron Spin Filter System　　　　　　　　　　　　　　　
H.Kira; Y.Sakaguchi; J.Suzuki; T.Oku; M.Nakamura; M.Arai; K.Kakurai; Y.Endo; Y.Arimoto; T.Ino; H.M.Shimizu; T.Kamiyama; K.Ohoyama; H.Hiraka; K.Tsutsumi; K.Yamada; L.-J.Chang
Physics Procedia, 2013, [Reviewed]

オンビームSEOP型³He偏極フィルター用小型レーザー光学系の開発
奥隆之; 林田洋寿; 酒井健二; 篠原武尚; 中村充孝; 新井正敏; 遠藤康夫; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 有本靖; 猪野隆; 大山研司; 平賀晴弘; 清水裕彦
日本中性子科学会年会講演概要集, 07 Dec. 2012

In‐situ SEOP方式³He偏極フィルター用磁気シールドの設計
吉良弘; 坂口佳史; 鈴木淳市; 酒井健二; 奥隆之; 篠原武尚; 中村充孝; 新井正敏; 猪野隆; 有本靖; 林田洋寿; 加倉井和久; 遠藤康夫; 堤健之; 平賀晴弘; 大山研司; 清水裕彦; CHANG L‐J
日本中性子科学会年会講演概要集, 07 Dec. 2012

SEOP式偏極³He中性子スピンフィルターにおける到達³He偏極率制限因子についての考察
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 鈴谷賢太郎; 相澤一也; 新井正敏; 武田全康; 遠藤康夫; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 山田和芳; CHANG L. J; 尾原幸治; 加倉井和久
日本物理学会講演概要集, 05 Mar. 2012

18aPSA-4 Fe-dopitg depetdetce at hith-eteray excitations of the metallic antiferromagnet Mn_3Si
Nara S.; Sungdae I.; Nakamura M.; Inamura Y.; Kolesnikov A. I.; Savici T.; Granroth G. E.; Russell E.; Arai M.; Yamada K.; Che S.C.; Hiraka H.; Ohoyama K.; Yamaguchi Y.; Miki H.; Horigane K.; Kajimoto R.; Ikeuchi K.
Meeting Abstracts of the Physical Society of Japan, 2012

25pCL-14 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC
Ohoyama K.; Sato T.; Sato T.J.; Arima T.; Ino T.; Kira H.; Sakaguchi Y.; Oku T.; Arimoto Y.; Suzuki J.; Shimizu H.M.; Iwasa K.; Takeda M.; Kaneko K.; Hino M.; Muto G.; Nojiri H.; Yokoo Y.; Itoh S.; Tomiyasu K.; Matusura M.; Hiraka H.; Fujita M.; Kimura H.
Meeting Abstracts of the Physical Society of Japan, 2012

Developments of In-Situ SEOP Polarized ³He Neutron Spin Filter in Japan
H. Kira; Y. Sakaguchi; Y. Sakaguchi; T. Oku; J. Suzuki; M. Nakamura; M. Arai; Y. Endoh; L. J. Chang; L. J. Chang; L. J. Chang; K. Kakurai; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada
Journal of Physics: Conference Series, 30 Aug. 2011

偏極³He中性子スピンフィルターのガラスセルの開発 IV
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 鈴谷賢太郎; 相澤一也; 新井正敏; 武田全康; 遠藤康夫; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 山田和芳; CHANG L. J; 尾原幸治; 加倉井和久
日本物理学会講演概要集, 24 Aug. 2011

中性子光学及び検出システムの開発と応用:研究概要
鈴木淳市; 高田慎一; 吉良弘; 篠原武尚; 奥隆之; 中村充孝; 柴田薫; 高橋伸明; 相澤一也; 甲斐哲也; 大井元貴; 原田正英; 酒井健二; 及川健一; 前川藤夫; 曽山和彦; 新井正敏; 坂口佳史; CHANG L.J; 酒井卓郎; 松林政仁; 加倉井和久; 佐藤節夫; 武藤豪; 有本靖; 猪野隆; 清水裕彦; 大山研司; 山田和芳; PARKER J; 澤野達裁; 谷森達; 古坂道弘; 鬼柳善明; 高橋浩之; GUERARD B
日本原子力研究開発機構JAEA-Review(Web), Jun. 2011

Characterization of glasses for ³He neutron spin filter cells
Y. Sakaguchi; Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; M. Arai; M. Takeda; S. Wakimoto; D. Yamazaki; S. Koizumi; Y. Endoh; K. Kakurai; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; L. J. Chang; L. J. Chang
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 01 Apr. 2011

26aEC-7 Single crystal neutron diffraction study of magnetic stricture of YbPd
Sugishima M.; Mitsuda A.; Wada H.; Ohoyama K.
Meeting abstracts of the Physical Society of Japan, 03 Mar. 2011

フェルミチョッパー中性子非弾性散乱装置「四季」
梶本亮一; 中村充孝; 横尾哲也; 稲村泰弘; 水野文夫; 中島健次; 高橋伸明; 河村聖子; 丸山龍治; 曽山和彦; 柴田薫; 鈴谷賢太郎; 中谷健; 佐藤節夫; 伊藤幸弘; 岩橋孝明; 神原理; 田中浩道; 吉田登; 帷子朝彦; 相澤一也; 新井正敏; 脇本秀一; 社本真一; 藤田全基; 平賀晴弘; 大山研司; 山田和芳
日本物理学会講演概要集, 03 Mar. 2011

Orbital Ordering of Intermediate-Spin State of Co3+ in Sr3YCo4O10.5
NAKAO HIRONORI; MURATA TETSUYA; BIZEN DAISUKE; MURAKAMI YOUICHI; OHOYAMA KENJI; YAMADA KAZUYOSHI; ISHIWATA SHINTARO; KOBAYASHI WATARU; TERASAKI ICHIRO
J Phys Soc Jpn, 15 Feb. 2011

22pJA-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC
Ohoyama K.; Sato T.; Sato T. J.; Arima T.; Ino T.; Kira H.; Sakaguchi Y.; Oku T.; Arimoto Y.; Suzuki J.; Shimizu H. M.; Iwasa K.; Takeda M.; Kaneko K.; Hino M.; Muto G.; Nojiri H.; Yokoo Y.; Itoh S.; Hiraka H.; Fujita M.; Matusura M.; Kimura H.; Tomiyasu K.
Meeting Abstracts of the Physical Society of Japan, 2011

25aTN-6 Present Status of Polarized Spectrometer Project in J-PARC
Ohoyama K.; Sato T. J.; Tomiyasu K.; Arima T.; Ino T.; Kira H.; Sakaguchi K.; Oku T.; Arimoto Y.; Suzuki J.; Shimizu H. M.; Iwasa K.; Takeda M.; Kaneko K.; Hino M.; Muto G.; Nojiri H.; Itoh S.; Yokoo Y.; Hiraka H.; Fujita M.; Matusura M.; Sato T.; Horigane K.
Meeting Abstracts of the Physical Society of Japan, 2011

中性子科学における学生教育　　　　　　　　　　　　　　　
平賀晴弘; 岩佐和晃; 大山研司
波紋, 2011

Application of Hot-Pressed Ge-Crystal Monochromators for Reactor-Based Neutron Beam Experiments
H. Hiraka; Y. Miyake; S.-C. Che; N. Murakami; M. Ohkawara; K. Nemoto; K. Horigane; K. Ohoyama; Y. Yamaguchi; K. Yamada
J. Phys. Soc. Jpn., 2011, [Reviewed]

J‐PARCフェルミチョッパー型中性子分光器「四季」
梶本亮一; 中村充孝; 横尾哲也; 稲村泰弘; 水野文夫; 中島健次; 高橋伸明; 河村聖子; 丸山龍治; 曽山和彦; 柴田薫; 鈴谷賢太郎; 中谷健; 佐藤節夫; 伊藤幸弘; 岩橋孝明; 神原理; 田中浩道; 吉田登; 帷子朝彦; 相澤一也; 新井正敏; 脇本秀一; 社本真一; 藤田全基; 平賀晴弘; 大山研司; 山田和芳
日本物理学会講演概要集, 18 Aug. 2010

チョッパー型中性子分光器「四季」の現状
梶本亮一; 中村充孝; 横尾哲也; 稲村泰弘; 水野文夫; 中島健次; 高橋伸明; 河村聖子; 丸山龍治; 曽山和彦; 柴田薫; 鈴谷賢太郎; 中谷健; 佐藤節夫; 伊藤幸弘; 岩橋孝明; 神原理; 田中浩道; 吉田登; 相澤一也; 新井正敏; 脇本秀一; 社本真一; 藤田全基; 平賀晴弘; 大山研司; 山田和芳
日本物理学会講演概要集, 01 Mar. 2010

22pPSA-39 Neutron Scattering Study on Frustrated Isosceles Triangular Lattice Antiferromagnet CuMnO_2
Terada N.; Kitazawa H.; Metoki N.; Ohoyama K.
Meeting Abstracts of the Physical Society of Japan, 2010

23aWP-6 Possibility of the inverse Dzyaloshinsky-Moriya interaction in metallic helical magnet MnP
Yamazaki T; Tabata Y; Waki T; Nakamura H; Matsuura M; Ohoyama K; Yokoyama M
Meeting Abstracts of the Physical Society of Japan, 2010

偏極³He中性子スピンフィルターのガラスセルの開発状況
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 鈴谷賢太郎; 相澤一也; 新井正敏; 武田全康; 遠藤康夫; CHANG L.J; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 堤健之; 山田和芳; 尾原幸治; 加倉井和久
日本中性子科学会年会講演概要集, 2010

中性子小角散乱装置SANS‐J‐IIにおける³Heスピンフィルターを用いた偏極解析
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 相澤一也; 新井正敏; 能田洋平; 小泉智; 武田全康; 遠藤康夫; CHANG L.J; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 堤健之; 山田和芳; 加倉井和久
日本中性子科学会年会講演概要集, 2010

フェルミチョッパー中性子分光器「四季」
梶本亮一; 中村充孝; 横尾哲也; 稲村泰弘; 水野文夫; 中島健次; 高橋伸明; 河村聖子; 丸山龍治; 曽山和彦; 柴田薫; 鈴谷賢太郎; 中谷健; 佐藤節夫; 伊藤幸弘; 岩橋孝明; 神原理; 田中浩道; 吉田登; 帷子朝彦; 相澤一也; 新井正敏; 脇本秀一; 社本真一; 藤田全基; 平賀晴弘; 大山研司; 山田和芳
日本中性子科学会年会講演概要集, 2010

チョッパー型中性子非弾性散乱装置「四季」
梶本亮一; 横尾哲也; 中村充孝; 中島健次; 稲村泰弘; 高橋伸明; 丸山龍治; 曽山和彦; 水野文夫; 柴田薫; 鈴谷賢太郎; 中谷健; 佐藤節夫; 伊藤幸弘; 岩橋孝明; 神原理; 田中浩道; 吉田登; 相澤一也; 新井正敏; 脇本秀一; 社本真一; 藤田全基; 平賀晴弘; 大山研司; 山田和芳; 武田和雄; 仁井田浩二
日本物理学会講演概要集, 03 Mar. 2009

30pRE-1 Structure and phase transition in quasi-1D semiconductor of lead-based Piperidinum
Takahashi M.; Nakatsuma M.; Kataoka K.; Kawasaki T.; Watanabe M.; Noda Y.; Ohyama K.; Hayakawa H.; Ohshima K.
Meeting Abstracts of the Physical Society of Japan, 2009

Relationship between Structure and Superconductivity in FeSe1-xTex
K. Horigane; H. Hiraka; K. Ohoyama
Journal of the Physical Society of Japan, 2009

動き出したJ‐PARCチョッパー分光器「四季」
梶本亮一; 中村充孝; 横尾哲也; 稲村泰弘; 水野文夫; 中島健次; 高橋伸明; 河村聖子; 丸山龍治; 曽山和彦; 柴田薫; 鈴谷賢太郎; 中谷健; 佐藤節夫; 伊藤幸弘; 岩橋孝明; 神原理; 田中浩道; 吉田登; 相澤一也; 新井正敏; 脇本秀一; 社本真一; 藤田全基; 平賀晴弘; 大山研司; 山田和芳
日本中性子科学会年会講演概要集, 2009

30aRE-8 Chopper Spectrometer 4SEASONS at MLF, J-PARC
Kajimoto R; Shibata K; Suzuya K; Nakatani T; Sato S; Ito Y; Iwahashi T; Kambara W; Tanaka H; Yoshida N; Aizawa K; Yokoo T; Arai M; Wakimoto S; Shamoto S; Fujita M; Hiraka H; Ohoyama K; Yamada K; Takeda K; Niita K; Nakamura M; Nakajima K; Inamura Y; Takahashi N; Maruyama R; Soyama K; Mizuno F
Meeting Abstracts of the Physical Society of Japan, 2009

Spin-Singlet Ground State in the Two-Dimensional Frustrated Triangular Lattice : YbAl_3C_3(Condensed matter : electronics structure and electrical, magnetic, and optical properties)
KATO Yoshiaki; KOSAKA Masashi; NOWATARI Hiromi; SAIGA Yuta; YAMADA Atsushi; KOBIYAMA Takuya; KATANO Susumu; OHOYAMA Kenji; SUZUKI Hiroyuki S; ASO Naofumi; IWASA Kazuaki
Journal of the Physical Society of Japan, 15 May 2008

Competition of magnetic and quadrupolar order parameters in HoB4
Daisuke Okuyama; Takeshi Matsumura; Takeshi Matsumura; Takuya Mouri; Naoko Ishikawa; Kenji Ohoyama; Haruhiro Hiraka; Hironori Nakao; Kazuaki Iwasa; Youichi Murakami
Journal of the Physical Society of Japan, 15 Apr. 2008

Experimental and computational studies on solvent-free rare-earth metal borohydrides R(BH4)(3) (R = Y, Dy, and Gd)
Toyoto Sato; Kazutoshi Miwa; Yuko Nakamori; Kenji Ohoyama; Hai-Wen Li; Tatsuo Noritake; Masakazu Aoki; Shin-ichi Towata; Shin-ichi Orimo
PHYSICAL REVIEW B, Mar. 2008

Resonance-Like Magnetic Excitations in Spinel Ferrimagnets FeCr2O4 and NiCr2O4 Observed by Neutron Scattering
K. Tomiyasu; H. Hiraka; K. Ohoyama; K. Yamada
J. Phys. Soc. Jpn., 2008, [Reviewed]

Scanning wide-angle neutron diffraction and its application to local structures investigations in stainless steel
Kenji Ohoyama; Kazuyuki Isawa; Kazuyoshi Yamada
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, Dec. 2007

Magnetization process of tetragonal antiferromagnet, ErB2C2
Hideya Onodera; Aya Hino; Kenji Ohoyama; Elichi Matsuoka; Tsutomu Nojima
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Mar. 2007

Versatility of advenced KINKEN triple-axis neutron spectrometer, AKANE
H. Hiraka; K. Ohoyama; Y. Yamaguchi; K. Yamada
J. Magn. Magn. Mat., 2007

High Intensity Chopper Spectrometer 4SEASONS at J-PARC
R. Kajimoto; T. Yokoo; K. Nakajima; M. Nakamura; K. Soyama; T. Ino; S. Shamoto; M. Fujita; K. Ohoyama; H. Hiraka; K. Yamada; M. Arai
Journal of Neutron Research (Taylor & Francis), 2007

Magnetic structure of Y1-xNdxMn6Sn6 alloys
T. Hori; H. Shiraishi; K. Ohoyama; M. Nishi; K. Koyama; K. Watanabe
PHYSICA B-CONDENSED MATTER, Nov. 2006

Magnetic phase diagrams of Dy1-xYxB2C2 (x=0.4 and 0.5)
H Onodera; K Indoh; A Tobo; K Ohoyama
PHYSICA B-CONDENSED MATTER, May 2006

Magnetic structures of antiferroquadrupolar ordering compound DyB2C2 under magnetic fields
K Ohoyama; A Tobo; S Katano; H Onodera
PHYSICA B-CONDENSED MATTER, May 2006

東北大金研三軸型中性子分光器AKANE
平賀晴弘; 大山研司; 山口泰男; 山田和芳
日本中性子科学会誌「波紋」, 2006

30pXD-7 Development of Neutron Focusing Devices using Supermirrors with a Parabolic Surface for Thermal Neutrons
Ikeda K.; Ohoyama K.; Hiraka H.; Shinohara T.; Hirota K.; Sato H.; Shimizu H.M.; Hino M.; Oku T.; Suzuki J.; Soyama K.
Meeting Abstracts of the Physical Society of Japan, 2006

Antiferromagnetic order in disorder-induced insulating phase of SrRu1-xMnxO3 (0.4 <= x <= 0.6)
M Yokoyama; C Satoh; A Saitou; H Kawanaka; H Bando; K Ohoyama; Y Nishihara
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jun. 2005

Electrical resistivity and AG susceptibility in quadrupolar and magnetic ordering compounds Dy1-xYxB2C2
K Indoh; A Tobo; K Ohoyama; H Onodera
PHYSICA B-CONDENSED MATTER, Apr. 2005

25aYS-2 Development of Neutron Focusing Devices using Supermirrors with a Parabolic Surface for Thermal and Cold Neutrons
Ikeda K.; Guo J.; Suzuki T.; Uehara Y.; Lin W.; Ohmori H.; Hino M.; Tasaki S.; Oku T.; Suzuki J.; Adachi T.; Soyama K.; Ohoyama K.; Hiraka H.; Shinohara T.; Morishima T.; Hirota K.; Mishima K.; Sato H.; Shimizu H. M.; Morita S.
Meeting Abstracts of the Physical Society of Japan, 2005

25aPS-55 Ce_3Ir_4Sn_<13>の磁気構造と結晶場の研究(領域8ポスターセッション(f電子系等),領域8(強相関系:高温超伝導,強相関f電子系など))
名越 千代子; 本多 史憲; 金子 耕士; Jnen Shintar; 伊藤 晋一; 大山 研司; 岩佐 和晃; Changping Yang.; 神木 正史; 青木 勇二; 真田 翔太朗; 菅原 仁; 佐藤 英行; 長壁 豊隆; 目時 直人
日本物理学会講演概要集, 2005

Anisotropy in Magnetic Phase Diagram of TbB₂C₂ with Field-Induced Antiferroquadrupolar Order
IDO Kaihei; TOBO Aya; KANEKO Koji; OHOYAMA Kenji; ONODERA Hideya
J. Phys. Soc. Jpn., 2005

Characteristic profile of magnetic diffuse scattering in ErB₂C₂
K. Ohoyama; H. Kimura; Y. Noda; K. Kaneko; A. Hino; A. Tobo; H. Onodera
Physica B, 2005

Hyperfine interactions in antiferroquadrupolar ordering compound DyB2C2 studied by Dy-161 Mossbauer spectroscopy on the Y-diluted system
K Indoh; A Tobo; K Ohoyama; H Onodera
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 2004

Magnetic phase diagrams of Ce1-xMxB2C2 (M = La and Lu)
A. Tobo; H. Yamauchi; E. Kishi; M. Sakata; K. Ishimoto; K. Ohoyama; H. Onodera; Y. Yamaguchi
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, May 2004

Three dimension measurements of magnetic diffuse scattering in the rare earth compound ErB₂C₂　　　　　　　　　　　　　　　
K. Ohoyama; H. Kimura; Y. Noda; K. Kaneko; A. Hino; A. Tobo; H. Onodera
Activity Report on Neutron Scattering Research, 2004

Localized electron nature of the antiferromagnetism of (CePd3)(8)Ge: Response to hydrostatic pressure and neutron diffraction
Y Tabata; K Watanabe; K Ohoyama; Y Yamaguch; M Ishizuka; K Okada; T Taniguchi; T Takeuchi; S Ramakrishnan; S Kawarazaki
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Aug. 2003

Neutron structural analysis of La1-xSrxMnO3 - Variation of one-electron bandwidth W with hole doping
S Xu; Y Moritomo; K Ohoyama; A Nakamura
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Mar. 2003

Neutron diffraction study of shape memory effect of Ni2MnGa-type alloys
K Inoue; Y Yamaguchi; Y Noda; K Ohoyama; H Kimura; K Enami
THERMEC'2003, PTS 1-5, 2003

Unusual Magnetic Scattering Around (100) in TbB_2C_2
Kaneko K.; Ohoyama K.; Metoki N.; Matsuda M.; Onodera H.; Yamaguchi Y.
Meeting Abstracts of the Physical Society of Japan, 2003

Field-induced Ordered Phase under H∥[110] in TbB_2C_2
Kaneko K.; Metoki N.; Ohoyama K.; Matsuda M.; Suzuki J.; Onodera H.; Yamaguchi Y.
Meeting Abstracts of the Physical Society of Japan, 2003

Unusual Magnetic Diffuse Scattering in the Tetragonal TbB₂C₂　　　　　　　　　　　　　　　
K. Kaneko; K. Ohoyama; R. Kiyanagi; H. Kimura; Y. Noda; H. Onodera; Y. Yamaguchi
Activity Report on Neutron Scattering Research, 2003

Neutron-diffraction study of the magnetic structure of GdB2C2
Y Yamaguchi; K Ohoyama; H Yamauchi; K Indoh; H Onodera
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Dec. 2002

The oxygen dependence of the magnetic structure for Sr3Fe2O7-delta
K Mori; T Kamiyama; H Kobayashi; T Arima; K Ohoyama; S Ikeda
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Dec. 2002

Anomalous antiferromagnetic properties of the tetragonal compound, TbB2C2 (vol 70, pg 3112, 2001)
K Kaneko; H Onodera; H Yamauchi; K Ohoyama; A Tobo; Y Yamaguchi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Dec. 2002

Magnetic phase transitions in substituted spinels of Zn1-xCuxCr2Se4; 0.0 <= x <= 0.3
M Hidaka; N Tokiwa; TT Wai; H Fujii; K Ohoyama; S Mizusima; J Sakaurai; F Ichikawa; K Itoh
PHASE TRANSITIONS, Mar. 2002

Antiferromagnetic order above antiferroquadrupolar transition temperature of HoB2C2
A Tobo; T Ohmori; T Matsumura; K Hirota; N Oumi; H Yamauchi; K Ohoyama; H Onodera; Y Yamaguchi
PHYSICA B-CONDENSED MATTER, Mar. 2002

Phase separation and ferromagnetic transition in B-site substituted Nd1/2Ca1/2MnO3
A Machida; Y Moritomo; K Ohoyama; T Katsufuji; A Nakamura
PHYSICAL REVIEW B, Feb. 2002

Anomalous Magnetic Ordering Phenomena in Tetragonal TbB2C2 Observed by Neutron Diffraction
KANEKO K; OHOYAMA K; KATANO S; MATSUDA M; ONODERA H; YAMAGUCHI Y
J. Phys. Soc. Jpn., 2002

Microscopic Charge Separation in Tb1-xCaxMnO 3 (x ∼ 1)
Akihiko Machida; Yutaka Moritomo; Shigeo Mori; Naoki Yamamoto; Kenji Ohoyama; Eiji Nishibori; Masaki Takata; Makoto Sakata; Toshiya Otomo; Arao Nakamura
Journal of the Physical Society of Japan, 01 Jan. 2002

Evidence of the quadrupolar ordering in DyPd3S4
E Matsuoka; J Kitagawa; K Ohoyama; H Yoshizawa; M Ishikawa
JOURNAL OF PHYSICS-CONDENSED MATTER, Dec. 2001

Powder neutron diffraction study on TbPd3S4 and YbPd3S4
E Matsuoka; F Takahashi; J Kitagawa; K Ohoyama; H Yoshizawa; M Ishikawa
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, May 2001

Magnetic properties of hp13 type TFe6Ge6(T = Zr, Nb, Hf) alloys
T Hori; R Nishihara; M Akimitsu; K Ohoyama; H Onodera; Y Yamaguchi; S Mitsudo; M Motokawa
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, May 2001

Anomalous Antiferromagnetic Properties of the Tetragonal Compound, TbB2C2
KANEKO K; ONODERA H; YAMAUCHI H; OHOYAMA K; TOBO A; YAMAGUCHI Y
J. Phys. Soc. Jpn., 2001

Estimate pulse shape functions for high resolution chopper spectrometers by means of the simulation calculation program, McStas　　　　　　　　　　　　　　　
K. Ohoyama; M. Arai; S. Itoh; K. Kuwahara; M. Matsuda; T. Osakabe; T. Otomo; J. Suzuki
Proc. of the 15th Meeting of the International Collaboration on Advanced Neutron Sources, Nov. 6-9, 2000, Tsukuba, 2001

Electronic phase diagram in bandwidth controlled manganites
A Machida; M Itoh; Y Moritomo; S Mori; N Yamamoto; K Ohoyama; A Nakamura
PHYSICA B-CONDENSED MATTER, Jun. 2000

Magnetic properties of the Kondo compounds CeZn1-xGax
K Ohoyama; M Watanabe; H Onodera; H Miki; Y Yamaguchi
PHYSICA B, Jun. 2000

Metal-insulator transition induced by a spin-state transition in TbBaCo2O5+δ(δ=0.5)
MORITOMO Y; AKIMOTO T; TAKEO M; MACHIDA A; NISHIBORI E; TAKATA M; SAKATA M; OHOYAMA K; NAKAMURA A
Physical Review B, 2000

Orbital stability in the spin-ordered phase of bilayer manganites as investigated by neutron-diffraction measurements
AKIMOTO T; MORITOMO Y; OHOYAMA K; OKAMOTO S; ISHIHARA S; MAEKAWA S; HIROTA K; NAKAMURA A
Physical Review B, 2000

Reconsideration of the lattice effect on the charge-ordering transition of doped manganites
MACHIDA A; MORITOMO Y; OHOYAMA K; OKAMOTO S; ISHIHARA S; MAEKAWA S; NAKAMURA A
Physical Review B, 2000

Phase separation and insulator-metal behavior of doped manganites
MACHIDA A; MORITOMO Y; NISHIBORI E; TAKATA M; SAKATA M; OHOYAMA K; MORI S; YAMAMOTO N; NAKAMURA A
Physical Review B, 2000

Crystal and magnetic structure of conducting double perovskite Sr2FeMoO6
Yutaka Moritomo; Sheng Xu; Akihiko Machida; Takumi Akimoto; Eiji Nishibori; Masaki Takata; Makoto Sakata; Kenji Ohoyama
Journal of the Physical Society of Japan, 01 Jan. 2000

Interrelation between orbital polarization and magnetic structure in bilayer manganites
T Akimoto; Y Moritomo; K Ohoyama; S Okamoto; S Ishihara; S Maekawa; A Nakamura
PHYSICAL REVIEW B, Jun. 1999

Layered antiferromagnetic state in (Nd1-zLaz)Sr2Mn2O7
Y Moritomo; A Nakamura; K Ohoyama; M Ohashi; K Hirota
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Feb. 1999

29p-PSA-36 Structural phase transition and magnetic properties in the Kondo componud CeZn_<1-x>Ga_x
Watanabe M.; Ohoyama K.; Onodera H.; Ohashi M.; Miki H.; Yamaguchi Y.
Meeting Abstracts of the Physical Society of Japan, 1999

Magnetic structures of Ni_2In type (Mn_<1-X>Ni_X)_2Ga Alloys
SHIRAISHI H.; NIIDA H.; IGUCHI Y.; OHYAMA K.; MIKI H.; YAMAGUCHI Y.; HORI T.; KANEMATSU K.
Meeting Abstracts of the Physical Society of Japan, 1998

Magnetic Structure of CePt_2Sn_2
SASAKI T.; KATANO S.; OHOYAMA K.; OHASHI M.; ECHIZEN Y.; TAKABATAKE T.; KADOWAKI H.; KOJIMA K.M; UEMURA Y.J; LUKE G.M; FUDAMOTO Y.; OSAKABE T.; KOIKE Y.; METOKI N.
Meeting Abstracts of the Physical Society of Japan, 1998

High energy magnetic excitations in Mn_<3-X>Fe_XSi.
MIKI H.; OHOYAMA K.; YAMADA K.; HIRAKA K.; HIROTA K.; TOMIYOSHI S.; YAMAGUCHI Y.
Meeting Abstracts of the Physical Society of Japan, 1998

Magnetic properties of Mn_<3-X>Ru_XGa (1≤X≤2) alloys.
HORI T.; MIKI H.; OHYAMA K.; YAMAGUCHI Y.
Meeting Abstracts of the Physical Society of Japan, 1998

Magnetic ordering and Structural phase transition of CeZn_<1-x>Ga_x
WATANABE M.; OHOYAMA K.; ONODERA H.; OHASHI M.; MIKI H.; YAMAGUCHI Y.
Meeting Abstracts of the Physical Society of Japan, 1998

Field dependence of the magnetic susceptibility in Mn3-x(Cr,Fe)xSi.
三木寛之; 大山研司; 山口泰男; 冨吉昇一
日本物理学会講演概要集(分科会), 1997

Magnetic Properties of Mn3-x(Cr,Fe)xSi.
三木寛之; 大山研司; 小野寺秀也; 山内宏; 山口泰男; 野尻浩之; 本河光博; 船橋達; 冨吉昇一
日本物理学会講演概要集(年会), 1997

Crystalline Electric Field and Magnetic Properties of the TmCu<2>Si<2> Intermetallics
Masashi Kosaka; Hideya Onodera; Kenji Ohoyama; Masayoshi Ohashi; Yasuo Yamaguchi; Shintarou Nakamura; Terutaka Goto
J. Phys. Soc. Jpn., 1997

NEUTRON-DIFFRACTION STUDY OF C-14-LAVES PHASE TBMN2
K INOUE; Y NAKAMURA; Y YAMAGUCHI; M OHASHI; K OHOYAMA; S FUNAHASHI; AV TSVYASHCHENKO; L FOMICHEVA
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Nov. 1995

CRYSTALLOGRAPHIC AND MAGNETIC-STRUCTURE OF THE ITINERANT-ELECTRON ANTIFERROMAGNETS MN3-XTXSI (T=CR, FE)
H MIKI; K OHOYAMA; S FUNAHASHI; S TOMIYOSHI; Y YAMAGUCHI
PHYSICA B, Aug. 1995

Magnetic excitations in the itinerant electron antiferromagnets Mn3Si. III.
三木寛之; 大山研司; 中島健次; 冨吉昇一; 山口泰男
日本物理学会講演概要集(分科会), 1995

Magnetic excitations in the itinerant electron antiferromagnets Mn3Si. II.
三木寛之; 大山研司; 中島健次; 冨吉昇一; 山口泰男
日本物理学会講演概要集(年会), 1995

Magnetic excitations in the itinerant electron antiferromagnets Mn3Si. I.
三木寛之; 大山研司; 中島健次; 冨吉昇一; 山口泰男
日本物理学会講演概要集(年会), 1994

Magnetic structure of itinerant-electron antiferromagnets Mn_3-x(Cr,Fe)_xSi. II.
三木寛之; 大山研司; 山内宏; 船橋達; 富吉昇一; 山口泰男
日本物理学会講演概要集(年会), 1993

CROSSOVER FROM MAGNETIC TO NONMAGNETIC GROUND-STATE IN THE KONDO ALLOY SYSTEM CE(NI1-XPDX)SN
M KASAYA; T TANI; H SUZUKI; K OHOYAMA; M KOHGI
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Aug. 1991

Hyperordered Structures in Materials
Koichi Hayashi; Shinji Kohara; Tomohiro Matsushita; Koji Kimura; Kenji Ohoyama; Yohei Onodera; Tomoko Sato; Shinji Kohara; Akihiko Hirata; Ayano Chiba; Shinya Hosokawa; Takehiko Ishikawa; Paul-François Paradis; Atsunobu Masuno; Ayako Nakata; Yoshitada Morikawa; Yu Takano; Takahiro Ohkubo; Satoshi Watanabe; Naoto Kitamura; Shinji Kohara; Motoki Shiga; Ippei Obayashi; Motoki Shiga; Satoshi Watanabe; Hiroki Taniguchi; Masanori Takemoto; Kenta Iyoki; Toru Wakihara; Atsunobu Masuno; Madoka Ono, Joint work
Springer Singapore, Nov. 2023, [Reviewed]
9789819952373

第５版 実験化学講座11 - 物質の構造III 回折　　　　　　　　　　　　　　　
大山研司, Joint work
丸善出版(株)）, May 2003

白色中性子ホログラフィーでの高分解能多検出器系の実装による軽元素超秩序構造の観測　　　　　　　　　　　　　　　
大山研司
学術変革領域「超秩序構造科学」第８回成果報告会２０２４年９月２４日, 24 Sep. 2024
20250924, 20250925

微量ドープによる局所格子歪みを可視化する新手法： 白色中性子ホログラフィー　　　　　　　　　　　　　　　
大山研司
日本鉄鋼協会シンポジウム, 01 Aug. 2025, [Invited]

〔Major achievements〕白色中性子ホログラフィーでの高分解能多検出器系の実装による軽元素超秩序構造の観測　　　　　　　　　　　　　　　
大山研司
学術変革領域「超秩序構造科学」第９回成果報告会 2025年3月8日, 08 Mar. 2025
20250308, 20250309

New atomic imaging method Neutron Holography for investigations of hyper-ordered structures of light elements in Crystals　　　　　　　　　　　　　　　
Kenji Ohoyama
Symposium on Hyper-Ordered Structure Sciences in London, 29 Jan. 2025
20250129, 20250130

元素選択性を利用した 中性子ホログラフィーでの最近の研究　　　　　　　　　　　　　　　
大山研司
中性子科学会大２４回年会, 06 Dec. 2024

白色中性子ホログラフィーでの高分解能多検出器系の実装による軽元素超秩序構造の観測　　　　　　　　　　　　　　　
大山研司
学術変革領域第７回成果報告会, 17 Nov. 2023
20240304

Neutron scattering technique with element selectivity for study of hyper-ordered structures of light elements　　　　　　　　　　　　　　　
*K. Ohoyama1; Y. Kobayashi1; Y. Tomimatsu1; K. Aizawa1; S. Kawakami1; K. Abe1; T. Kuroume1; M. Takita1; M. Harada2; Y. Inamura2; K. Oikawa2; N. Happo3; K. Hayashi4
MRM2023/IUMRS-ICA2023, 13 Dec. 2023, Materials Research Society of Japan (MRS-J)
20231211, 20231215

白色中性子ホログラフィーでの高分解能多検出器系の実装による軽元素超秩序構造の観測　　　　　　　　　　　　　　　
大山研司
学術変革領域第６回成果報告会, 17 Nov. 2023
20231117

白色中性子ホログラフィーを用いた軽元素超秩序構造研究の現状　　　　　　　　　　　　　　　
大山研司; 小林洋大; 富松優花; 會澤幸希; 川上修汰; 阿部幸樹; 黒梅智子; 滝田正勝; 原田正英A; 及川健一A; 稲村泰弘A; 八方直久B; 林 好一
日本物理学会 2023年年会, 16 Sep. 2023, 日本物理学会
20230916, 20230919

〔Major achievements〕白色中性子ホログラフィー：ビームライン提案への考察　　　　　　　　　　　　　　　
大山研司
日本中性子科学会第23回年会, 14 Sep. 2023, 日本中性子科学会
20230913, 20230914

新しい水素原子イメージング法：白色中性子ホログラフィー　　　　　　　　　　　　　　　
新学術領域：ハイドロジェノミクス 前期講演会, 20 Jul. 2023, 新学術領域：ハイドロジェノミクス, [Invited]
20230719, 20230721

J-PARCでの超秩序構造研究：白色中性子ホログラフィーの進展と計画　　　　　　　　　　　　　　　
大山研司、菅野友哉、高野元輝、星 翔太、小林洋大、富松優花、; 會澤幸希、川上修汰、八方直久A、原田正英B、及川健一B、稲村泰弘B、; 林 好一C
日本物理学会2023年春季大会, 24 Mar. 2023, 日本物理学会
20230322, 20230324

中性子ホログラフィーの高分解能化による超秩序構造中の軽元素挙動の観測　　　　　　　　　　　　　　　
大山研司
変革領域「超秩序構造科学」第５回成果報告会, 14 Mar. 2023
20230313, 20230314

物質中で孤立した水素の新しい観測法の確立：中性子ホログラフィーの応用　　　　　　　　　　　　　　　
大山研司
新学術領域研究「ハイドロジェノミクス」,最終報告会, 23 Nov. 2022, 新学術領域研究「ハイドロジェノミクス」
20221121, 20221123

元素選択性を持つ中性子散乱実験 ー 白色中性子ホログラフィー ー　　　　　　　　　　　　　　　
大山研司、會澤幸希、川上修汰、小林洋大; 富松優花; 菅野友哉; 高野元輝; 星 翔太; 八方直久; 原田正英; 及川健一、 稲村泰弘、 林 好一
第２２回 日本中性子科学会年会, 28 Oct. 2022, 日本中性子科学会
20221026, 20221028

中性子ホログラフィーの高分解能化による超秩序構造中の軽元素挙動の観測　　　　　　　　　　　　　　　
大山研司
超秩序構造科学 第４回成果発表会, 01 Oct. 2022, 変革領域「超秩序構造科学」
20221001, 20221002

Challenge of Novel atomic imaging for Hydrogen,White Neutron Holography　　　　　　　　　　　　　　　
Kenji OHOYAMA
第2回ハイドロジェノミクス国際会議, 18 May 2022
20220516, 20220519

新しい材料科学の目：白色中性子ホログラフィー　　　　　　　　　　　　　　　
大山研司
日本物理学会７６回年次大会 合同シンポジウム, 14 Mar. 2021, 日本物理学会, [Invited]
20210312, 20210315

白色中性子ホログラフィーの最近の進展と次の展開　　　　　　　　　　　　　　　
大山 研司; 杉本 和哉; 山本 隆文; 荒瀬 将太朗; 石﨑 たかと; 野田 新太; 菅野 友哉; 高野 元輝; 星 翔太; 八方 直久; 原田 正英; 及川 健一; 稲村 泰弘; 林 好一
日本中性子科学会2020年年会, 09 Nov. 2020
20201109, 20201109

白色中性子ホログラフィーで見るSi単結晶中の水素　　　　　　　　　　　　　　　
大山研司
量⼦ビーム連携研究センター（CIQuS）研究会 「無機材料中の⽔素の存在状態と機能発現」, 27 Aug. 2020, 高エネルギー加速器研究機構 量⼦ビーム連携研究センター（CIQuS）, [Invited]
20200827

CHALLENGE OF DETERMINATION OF HYDROGEN POSITIONS IN HYDRIDES BY WHITE NEUTRON HOLOGRAPHY　　　　　　　　　　　　　　　
K. Ohoyama; Y. Kanazawa; T. Yamamoto; S. Uechi; K. Sugimoto; S. Arase; S. Noda; T. Ishizaki; K. Hayashi; N. Happo; M. Harada; K. Oikawa; Y. Inamura; T. Sato; S. Orimo
1st Int. Symposium "Hydrogenomics" combined with 14th Int. Symposium "Hydrogen & Energy", 06 Jan. 2020

Novel Usages of NeutronsWhite Neutron Holography in J-PARC(招待）　　　　　　　　　　　　　　　
Kenji OHOYAMA
Materials Research Meeting 2019, 11 Dec. 2019, [Invited]
20191211

Novel Usages of Neutrons White Neutron Holography in J-PARC　　　　　　　　　　　　　　　
Kenji OHOYAMA
Materials Research Meeting 2019, 11 Dec. 2019, [Invited]

Novel Usages of Neutrons White Neutron Holography in J-PARC(招待）　　　　　　　　　　　　　　　
Kenji OHOYAMA
Materials Research Meeting 2019, 11 Dec. 2019, [Invited]

Novel Usages of NeutronsWhite Neutron Holography in J-PARC（招待講演）　　　　　　　　　　　　　　　
Kenji OHOYAMA
14th International Conference on the Structure of Non-Crystalline Materials (2019/11/3-8), 05 Nov. 2019, [Invited]
20191105

Novel Usages of Neutrons White Neutron Holography in J-PARC　　　　　　　　　　　　　　　
Kenji OHOYAMA
14th International Conference on the Structure of Non-Crystalline Materials (2019/11/3-8), 05 Nov. 2019, [Invited]

Novel Usages of Neutrons White Neutron Holography in J-PARC（招待講演）　　　　　　　　　　　　　　　
Kenji OHOYAMA
14th International Conference on the Structure of Non-Crystalline Materials (2019/11/3-8), 05 Nov. 2019, [Invited]

材料科学での中性子の新しい使い方：白色中性子ホログラフィー（招待講演）　　　　　　　　　　　　　　　
大山研司
第80回応用物理学会秋季学術講演会 放射線分科会シンポジウム「量子ビーム利用の最前線 ～医療・産業利用の現状と将来～」, 19 Sep. 2019, 日本応用物理学会, [Invited]
20190919

材料科学での中性子の新しい使い方：白色中性子ホログラフィー　　　　　　　　　　　　　　　
大山研司
第80回応用物理学会秋季学術講演会 放射線分科会シンポジウム「量子ビーム利用の最前線 ～医療・産業利用の現状と将来～」, 19 Sep. 2019, 日本応用物理学会, [Invited]

白色中性子ホログラフィーによる希土類化合物での原子構造へのドープ効果の観測　　　　　　　　　　　　　　　
大山研司; 上地昇一; 金澤雄輝; 福本陽平; 杉本和哉; 山本隆文; 八方直久B; 林 好一; 原田正英; 及川健一; 稲村泰弘; 松浦 航; 伊賀文俊
日本物理学会 第７４回年会 領域８, 14 Mar. 2019

White Neutron Holography - Determination of B Position in Mg2Si -　　　　　　　　　　　　　　　
K. Ohoyama
Workshop of Thermoelectric Materials at Ibaraki Univ., 28 Feb. 2019, [Invited]

Present Status and Future Plans of White Neutron Holography in J-PARC　　　　　　　　　　　　　　　
K. Ohoyama1; Y. Fukumoto1; S. Uechi1; Y. Kanazawa1; K. Sugimoto1; T. Yamamoto1; K. Hayashi2; N. Happo3; M. Harada4; K. Oikawa4; Y. Inamura4
Symposium on 3D Active-site Science in London,, 04 Feb. 2019

J-PARC白色中性子ビームによる軽元素局所構造の観測（招待講演）　　　　　　　　　　　　　　　
大山研司
第32回日本放射光学会年会．放射光科学合同シンポジウム, 11 Jan. 2019, 日本放射光学会, [Invited]
20190111

中性子で何がみえるのか ー物質科学の視点からー　　　　　　　　　　　　　　　
大山研司
平成３０年物質科学研究会, 14 Dec. 2018, 中性子産業利用推進協議会

原子構造へのドープ効果の観測 --白色中性子ホログラフィーの進展--　　　　　　　　　　　　　　　
大山研司
日本中性子科学会 第１８回年会, 04 Dec. 2018, 日本中性子科学会

白色中性子ホログラフィーによるドープ材料の局所構造の可視化（招待講演）　　　　　　　　　　　　　　　
大山研司
日本物理学会 ２０１８年秋季大会, 11 Sep. 2018, 日本物理学会, [Invited]
20180911

Novel usage of neutron scattering: holography for observations of local atomic structures of light elements　　　　　　　　　　　　　　　
Kenji Ohoyama; Yohei Fukumoto; Shoichi Uechi; Yuki KanazawaKouichi Hayashi; Naohisa Happo; Masahide Harada; Yasuhiro Inamura; Kenichi Oikawa
The 31st European Crystallographic Meeting, ECM31, 25 Aug. 2018, Europian Crystallographic Association

Yb5Ge4の磁気構造解析　　　　　　　　　　　　　　　
福本陽平; 大山研司; 青野美南; 町田阿弓A; 沼倉凌介A; 酒井俊A; 道村真司A; 小坂昌史A; 星川晃範C; 石垣徹
日本物理学会第７３回年次大会, 22 Mar. 2018, 日本物理学会

γ線エネルギー解析を用いた白色中性子ホログラフィーでの局所構造解析　　　　　　　　　　　　　　　
福本陽平; 上地昇一; 金澤雄輝; 大山研司; 林好一; 八方直久; 波田拓馬; 木村耕治; 細川伸也; 原田正英; 及川健一; 稲村康弘; 筒井一生; B. Paulus; M. Lederer; P. Wellmann
量子ビームサイエンスフェスタ2017, 02 Mar. 2018, 高エネルギー加速器研究機構

白色中性子ホログラフィーによるRB6 (R:希土類)の局所構造観測　　　　　　　　　　　　　　　
上地昇一; 金澤雄輝; 福本陽平; B. Paulus; M. Lederar; 大山研司; 八方直久; 林好一; 木村耕治; 細川伸也; 波田拓馬; 原田正英; 及川健一; 稲村泰弘; 松浦航; 伊賀文俊
量子ビームサイエンスフェスタ2017, 02 Mar. 2018, 高エネルギー加速器研究機構

中性子ホログラフィーによるB ドープSi の局所構造の観測　　　　　　　　　　　　　　　
金澤雄輝; 福本陽平; 上地昇一; 大山研司; M. Lederer; 八方直久; 林好一; 木村耕治; 細川伸也; 波田拓馬; 原田正英; 及川健一; 稲村泰弘; 筒井一生
量子ビームサイエンスフェスタ2017, 02 Mar. 2018

中性子の新しい使い方：中性子ホログラフィーによるドーパント周りの原子配置の観測　　　　　　　　　　　　　　　
大山研司
量子ビームサイエンスフェスタ2017, 02 Mar. 2018, [Invited]

中性子の新しい使い方：ホログラフィーでの軽元素局所構造の観測（招待講演）　　　　　　　　　　　　　　　
大山研司
薄膜・多層膜の埋もれた界面のX線・中性子解析ワークショップ 2018, 21 Jan. 2018, [Invited]

Novel usage of neutrons White neutron holography for investigations of local atomic structuress（招待講演）　　　　　　　　　　　　　　　
K. Ohoyama; Y. Fukumoto; S. Uechi; Y. Kanazawa; K. Hayashia; N. Happob; K. Kimuraa; S. Hosokawac; T. Hadab; B. Paulusc; J. Stellhornc; M. Lederera; M. Haradad; Y. Inamurad; K. Oikawad; W. Matsuurae; F. Igae; K. Tsutsuif; P. Wellmanng
The 16th Korea-Japan meeting on Neutron Science, 10 Jan. 2018, 物性研、J-PARCセンター, [Invited]

Novel usage of neutrons,White neutron holography for investigations of local atomic structuress（招待講演）　　　　　　　　　　　　　　　
K. Ohoyama; Y. Fukumoto; S. Uechi; Y. Kanazawa; K. Hayashia; N. Happob; K. Kimuraa; S. Hosokawac; T. Hadab; B. Paulusc; J. Stellhornc; M. Lederera; M. Haradad; Y. Inamurad; K. Oikawad; W. Matsuurae; F. Igae; K. Tsutsuif; P. Wellmanng
The 16th Korea-Japan meeting on Neutron Science, 10 Jan. 2018, 物性研、J-PARCセンター, [Invited]

Local structure observation of Sm doped LaB6 by white neutron atomic resolution holography　　　　　　　　　　　　　　　
S. Uechi; Y. Kanazawa; Y. Fukumoto; B. Paulusa; K. Ohoyama; N. Happob; K. Hayashic; K. Kimurac; S. Hosokawaa; T. Hadab; M. Haradad; K. Oikawad; Y. Inamurad; W. Matsuurae; F. Igae
The 16th Korea-Japan meeting on Neutron Science, 09 Jan. 2018, 物性研、J-PARCセンター, [Invited]

Investigations of Local Structures by White Neutron Atomic Resolution Holography with γ-ray Energy Analysis　　　　　　　　　　　　　　　
Y. Fukumoto; S. Uechi; T. Kanazawa; K. Ohoyama; K. Hayashia; N. Happob; T. Hadab; K. Kimuraa; S. Hosokawac; M. Haradad; K. Oikawad; Y. Inamurad; K. Tsutsuie; B. Paulusc; M. Lederera; f; P. Wellmannf
The 16th Korea-Japan meeting on Neutron Science, 09 Jan. 2018, 物性研、J-PARCセンター, [Invited]

Local structure observation of Sm doped LaB6,by white neutron atomic resolution holography　　　　　　　　　　　　　　　
S. Uechi; Y. Kanazawa; Y. Fukumoto; B. Paulusa; K. Ohoyama; N. Happob; K. Hayashic; K. Kimurac; S. Hosokawaa; T. Hadab; M. Haradad; K. Oikawad; Y. Inamurad; W. Matsuurae; F. Igae
The 16th Korea-Japan meeting on Neutron Science, 09 Jan. 2018, 物性研、J-PARCセンター, [Invited]

Observation of doping effects to local atomic structures by atomic resolution holography　　　　　　　　　　　　　　　
Kenji OHOYAMA
2nd International Symposium of Quantum Beam Science at Ibaraki University, 09 Dec. 2017, 茨城大学量子線科学専攻、フロンテイアセンター, [Invited]

Local structure investigations of B doped Si by neutron atomic-resolution holography　　　　　　　　　　　　　　　
Y. Kanazawa; Y. Fukumoto; S. Uechi; K. Ohoyama; M. Lederer; N. Happo; K. Hayashi; K. Kimura; S. Hosokawa; T. Hada; M. Harada; K. Oikawa; Y. Inamura; K. Tsutsui
2nd International Symposium of Quantum Beam Science at Ibaraki University, 09 Dec. 2017, 茨城大学量子線科学専攻、フロンテイアセンター, [Invited]

Investigations of Local Structures by White Neutron Atomic Resolution Holography with γ-ray Energy Analysis　　　　　　　　　　　　　　　
Y. Fukumoto1; S. Uechi1; T. Kanazawa1; K. Ohoyama1; K. Hayashi2; N. Happo3; T. Hada3; K. Kimura2; S. Hosokawa4; M. Harada5; K. Oikawa5; Y. Inamura5; K. Tsutsui6; B. Paulus4; M. Lederer7; P. Wellmann7
2nd International Symposium of Quantum Beam Science at Ibaraki University, 09 Dec. 2017, 茨城大学量子線科学専攻、フロンテイアセンター, [Invited]

Local structure observation of Sm doped LaB6 by white neutron atomic resolution holography　　　　　　　　　　　　　　　
S. Uechi; Y. Kanazawa; Y. Fukumoto; B. Paulus; K. Ohoyama; N. Happo; K. Hayashi; K. Kimura; S. Hosokawa; T. Hada; M. Harada; K. Kimura; S. Hosokawa; M. Harada; K. Oikawa; Y. Inamura; K. Tsutsui; B. Paulus; M. Lederer; P. Wellmann
2nd International Symposium of Quantum Beam Science at Ibaraki University, 09 Dec. 2017, 茨城大学量子線科学専攻、フロンテイアセンター, [Invited]

Local structure investigations of B doped Si by ,neutron atomic-resolution holography　　　　　　　　　　　　　　　
Y. Kanazawa1; Y. Fukumoto1; S. Uechi1; K. Ohoyama1; M. Lederer2; N. Happo3; K. Hayashi4; K. Kimura4; S. Hosokawa5; T. Hada3; M. Harada6; K. Oikawa6; Y. Inamura6; K. Tsutsui7
2nd International Symposium of Quantum Beam Science at Ibaraki University, 09 Dec. 2017, 茨城大学量子線科学専攻、フロンテイアセンター, [Invited]

Local structure observation of Sm doped LaB6,by white neutron atomic resolution holography　　　　　　　　　　　　　　　
S. Uechi1; Y. Kanazawa1; Y. Fukumoto1; B. Paulus2; K. Ohoyama1; N. Happo3; K. Hayashi4; K. Kimura4; S. Hosokawa2; T. Hada3; M. Harada5; K. Kimura2; S. Hosokawa4; M. Harada5; K. Oikawa5; Y. Inamura5; K. Tsutsui6; B. Paulus4; M. Lederer7; P. Wellmann7
2nd International Symposium of Quantum Beam Science at Ibaraki University, 09 Dec. 2017, 茨城大学量子線科学専攻、フロンテイアセンター, [Invited]

局所構造理解の新手法：白色中性子ホログラフィーの進展　　　　　　　　　　　　　　　
大山研司; 福本陽平; 上地昇一; 金澤雄輝; 林好一; 八方直久; 木村耕治; 細川伸也; 波田拓馬; 原田正英; 稲村泰弘; 筒井一生
日本中性子科学会 年会, 02 Dec. 2017, 日本中性子科学会

白色中性子ホログラフィーによるSmドープLaB6の局所構造観測　　　　　　　　　　　　　　　
上地昇一; 金澤雄輝; 福本陽平; B.Paulus; 大山研司; 八方直久; 林好一; 原田正英; 稲村泰弘; 松浦航; 伊賀文俊
第１７回日本中性子科学会年会, 02 Dec. 2017, 中性子科学会

中性子ホログラフィーによるBドープSiの局所構造解明　　　　　　　　　　　　　　　
金澤雄輝; 福本陽平; 上地昇一; 大山研司; M.Lederer; 林好一; 八方直久; 木村耕治; 細川伸也; 波田拓馬; 原田正英; 稲村泰弘; 筒井一生
第１７回日本中性子科学会年会, 02 Dec. 2017, 中性子科学会

多波長中性子ホログラフィー法による軽元素局所構造解析　　　　　　　　　　　　　　　
福本陽平; 上地昇一; 金沢雄輝; B. Paulus; 大山研司; 林好一; 八方直久; 木村耕治; 細川伸也; 波田拓馬; 原田正英; 稲村泰弘; 筒井一生; P. Wellmann
第１７回日本中性子科学会年会, 02 Dec. 2017, 中性子科学会

中性子の新しい使い方 ーー中性子ホログラフィーでの局所構造観測　　　　　　　　　　　　　　　
大山研司
J-PARC装置勉強会, 29 Sep. 2017, [Invited]

中性子ホログラフィーによるBドープSiの局所構造解明　　　　　　　　　　　　　　　
大山研司; 林好一; 八方直久; 木村耕治; 細川伸也; 波田拓馬; 青野美南; 福本陽平; 原田正英; 稲村泰弘; 筒井一生
東京大学物性研究所 短期研究会, 20 Dec. 2016, 東京大学物性研究所 、科研費新学術領域「3D活性サイト科学」「原子層科学」

中性子ホログラフィーによるBドープSiの局所構造解明　　　　　　　　　　　　　　　
大山研司; 林好一; 八方直久; 木村耕治; 細川伸也; 波田拓馬; 原田正英; 稲村泰弘; 筒井一生
第１６回 日本中性子科学会年会, 02 Dec. 2016, 日本中性子科学会

中性子ホログラフィー法によるドープ系機能性材料での局所構造研究　　　　　　　　　　　　　　　
大山研司
平成28年度物質科学研究会, 29 Sep. 2016, 中性子産業利用推進協議会, [Invited]

Progress of neutron atomic resolution holography for observations of light elements(Invited talk)　　　　　　　　　　　　　　　
K. Ohoyama
International Symposium on Advanced Materials Having Multi-Degrees-of-Freedom - Optical Properties, Structural Analysis, Imaging and Informatics of Materials - (2-3 November 2015, Kumamoto), 02 Nov. 2015, [Invited]

Progress of Local Structure Investigations by Atomic Resolution Neutron Holography in Japan　　　　　　　　　　　　　　　
K. Ohoyama; K. Hayashi; S. Orimo; H. Takahashi; K. Shibata
588. WE-Heraeus Seminar,Element Specific Structure Determination in Materials on Nanometer and Sub-Nanometer Scales using modern X-Ray and Neutron Techniques, 28 Apr. 2015, WE-Heraeus Fundation

茨城大学大学院理工学研究科

茨城大学工学部

茨城大学工学部

茨城大学工学部

茨城大学工学部

茨城大学工学部

茨城大学

茨城大学工学部

Apr. 2001, 日本中性子科学会

Apr. 1986, 物理学会

材料中での水素局所構造観測を実現する"中性子XAFS法"への挑戦　　　　　　　　　　　　　　　
茨城大学
Apr. 2024 - Mar. 2027

白色中性子ホログラフィーでの高分解能多検出器系の実装による軽元素超秩序構造の観測　　　　　　　　　　　　　　　
科学研究費補助金 学術変革領域研究(A)「超秩序構造科学」公募研究
Apr. 2023 - Mar. 2025

新しい原子イメージング法を用いたカゴ状構造内ドーパントの孤立振動の定量評価　　　　　　　　　　　　　　　
基盤研究(B)
Apr. 2021 - Mar. 2024

Development and applications of multiple wavelength neutron holography toward atomic imaging of light elements and magnetic structures
Grant-in-Aid for Scientific Research (A)
Nagoya Institute of Technology
Apr. 2019 - Mar. 2024

中性子ホログラフィーの高分解能化による超秩序構造中の軽元素挙動の観測　　　　　　　　　　　　　　　
変革領域「超秩序構造」公募研究
Sep. 2021 - Mar. 2023

物質中で孤立した水素の新しい観測法の確立：中性子ホログラフィーの応用　　　　　　　　　　　　　　　
新学術領域 公募研究
Apr. 2021 - Mar. 2023

軽元素制御による高機能な準安定シリコン系多元混晶材料の創製　　　　　　　　　　　　　　　
基盤研究(A)
Apr. 2020 - Mar. 2023

水素吸蔵物質での水素位置確定法：粉末中性子ホログラフィーの実現
新学術領域研究(研究領域提案型)
茨城大学
Apr. 2019 - Mar. 2021

エネルギー解析白色中性子ホログラフィー法の開発とドープ系機能性材料への応用　　　　　　　　　　　　　　　
基盤研究(C)
Apr. 2017 - Mar. 2020

電荷と磁気モーメントのドープによる高次多極子秩序に拮抗する自由度の活性化
新学術領域研究「3Ｄ活性サイト科学, A02 活性サイトの解析と次世代３Ｄ原子イメージング技術の開発(手法)」公募研究
Ibaraki University
Apr. 2017 - Mar. 2019

3Ｄ活性サイト科学のプラットフォーム構築による総括と研究支援　　　　　　　　　　　　　　　
新学術領域研究(研究領域提案型)
Jul. 2014 - Mar. 2019

蛍光X線・中性子線ホログラフィーによるドープ原子３Dイメージング　　　　　　　　　　　　　　　
新学術領域研究(研究領域提案型)
Jul. 2014 - Mar. 2019

Study on strongly correlated electron systems by using high-order neutron magnetic scattering processes
Grant-in-Aid for Scientific Research (A)
Tohoku University
Apr. 2011 - Mar. 2016

特願2007-301728, 「中性子回折装置」

茨城大学KEK-Days　　　　　　　　　　　　　　　
Planning etc
27 Dec. 2022 - 28 Dec. 2022