ホシカワ アキノリ
星川 晃範准教授
Akinori HOSHIKAWA

■研究者基本情報

組織

  • 理工学研究科(博士前期課程) 量子線科学専攻
  • 理工学研究科(博士後期課程) 量子線科学専攻
  • 原子科学研究教育センター
  • 応用理工学野 ビームライン科学領域

研究分野

  • エネルギー, 量子ビーム科学
  • ナノテク・材料, 構造材料、機能材料
  • 自然科学一般, 数理物理、物性基礎

研究キーワード

  • 量子ビーム
  • 材料科学
  • 装置開発

学位

  • 1999年03月 博士(理学)(北海道大学)

経歴

  • 2024年04月 - 現在, 茨城大学, 原子科学研究教育センター, 准教授
  • 2010年09月 - 2024年03月, 茨城大学, フロンティア応用原子科学研究センター, 准教授
  • 2008年04月 - 2010年08月, 茨城大学, フロンティア応用原子科学研究センター, 助教
  • 2007年10月 - 2008年04月, 茨城大学, フロンティア応用原子科学研究センター設立準備室, 助教
  • 2006年04月 - 2007年09月, 国立研究開発法人日本原子力研究開発機構, 特定課題推進員
  • 2004年04月 - 2006年03月, 日本原子力研究所, 博士研究員
  • 2001年09月 - 2004年03月, 高エネルギー加速器研究機構, 研究機関研究員
  • 1999年04月 - 2001年08月, 日本学術振興会特別研究員(PD)

■研究活動情報

受賞

  • 2012年12月, 日本中性子科学会第10回技術賞, iMATERIAにおける試料自動交換ロボットの開発
    国内学会・会議・シンポジウム等の賞
  • 2010年10月, The 1st Michael Meissner Prize of 6th International Workshop on Sample Environment at Neutron Scattering Facilities, Automatic sample exchange system for a large number of samples at room temperature
    国際学会・会議・シンポジウム等の賞

論文

  • Revisiting NaxCoO2: A renewed magnetic phase diagram based on electrochemical reaction synthesis
    Ola Kenji Forslund; Jun Sugiyama; Daniel Andreica; Izumi Umegaki; Elisabetta Nocerino; Calvin Brett; Stephan Roth; L. Daniel Söderberg; Nami Matsubara; Thomas C. Hansen; Akinori Hoshikawa; Elodie Guerin; Claude Delmas; Yasmine Sassa; Martin Månsson, The assertion of intrinsic material properties based on measured experimental data is being challenged by emerging sample synthesis protocols, which opens new avenues for discovering novel functionalities. In this study, we revisit one of the most widely studied strongly correlated materials of the early 2000s, NaxCoO2 (NCO). Leveraging the sensitivity of muon spin rotation and relaxation (μ+SR) measurements, we discern significant differences between NCO samples synthesized via conventional solid-state reaction (SSR) and our electrochemical reaction (ECR) approach. Contrary to SSR-synthesized Na0.7CoO2, which exhibits a nonmagnetic ground state, our ECR-derived sample showcases an antiferromagnetic (AF) order from x≥0.7, challenging established phase boundaries. We attribute the observed magnetic phenomena in ECR-NCO to long-range order of Na-ions and/or vacancies, as well as the inherent flexibility of the crystal framework. Our study holds implications for tailoring and optimization of next-generation devices based on layered materials.

    Published by the American Physical Society 2025, American Physical Society (APS)
    Physical Review Research, 2025年05月12日, [査読有り]
  • Local noncentrosymmetric effect on antiferromagnetic ordering in the tetragonal crystal structure phase of Eu3Ir4Sn13
    Takanobu Kumada; Yotaro Suzuki; Kazuaki Iwasa; Keitaro Kuwahara; Hajime Sagayama; Hironori Nakao; Motoyuki Ishikado; Akinori Hoshikawa, ラスト(シニア)オーサー, American Physical Society (APS)
    Physical Review B, 2025年03月31日, [査読有り]
  • 紫外線によるポリプロピレンの劣化と高次構造               
    星川 晃範; 早乙女 秀丸, 筆頭著者
    SPring-8/SACLA 利用研究成果集, 2024年06月, [査読有り]
  • 中性子回折によるパーメンジュール合金の高温相変態解析               
    佐藤李行; 河原幸汰; 富田俊郎; 星川晃範; 鈴木 茂; 佐藤成男
    X線分析の進歩55, 2024年03月, [査読有り]
  • Na-ion dynamics in the solid solution NaxCa1−xCr2O4 studied by muon spin rotation and neutron diffraction
    Elisabetta Nocerino; Ola Kenji Forslund; Hiroya Sakurai; Nami Matsubara; Anton Zubayer; Federico Mazza; Stephen Cottrell; Akihiro Koda; Isao Watanabe; Akinori Hoshikawa; Takashi Saito; Jun Sugiyama; Yasmine Sassa; Martin Månsson, Thermally activated Na diffusion mechanism in the honeycomb-like 1D channels of the solid solution NaxCa1−xCr2O4., Royal Society of Chemistry (RSC)
    Sustainable Energy & Fuels, 2024年02月, [査読有り]
  • Competition between magnetic interactions and structural instabilities leading to itinerant frustration in the triangular lattice antiferromagnet LiCrSe2
    Elisabetta Nocerino; Shintaro Kobayashi; Catherine Witteveen; Ola K. Forslund; Nami Matsubara; Chiu Tang; Takeshi Matsukawa; Akinori Hoshikawa; Akihiro Koda; Kazuyoshi Yoshimura; Izumi Umegaki; Yasmine Sassa; Fabian O. von Rohr; Vladimir Pomjakushin; Jess H. Brewer; Jun Sugiyama; Martin Månsson, Abstract

    LiCrSe2 constitutes a recent valuable addition to the ensemble of two-dimensional triangular lattice antiferromagnets. In this work, we present a comprehensive study of the low temperature nuclear and magnetic structure established in this material. Being subject to a strong magnetoelastic coupling, LiCrSe2 was found to undergo a first order structural transition from a trigonal crystal system ($$P\bar{3}m1$$) to a monoclinic one (C2/m) at Ts = 30 K. Such restructuring of the lattice is accompanied by a magnetic transition at TN = 30 K. Refinement of the magnetic structure with neutron diffraction data and complementary muon spin rotation analysis reveal the presence of a complex incommensurate magnetic structure with a up-up-down-down arrangement of the chromium moments with ferromagnetic double chains coupled antiferromagnetically. The spin axial vector is also modulated both in direction and modulus, resulting in a spin density wave-like order with periodic suppression of the chromium moment along the chains. This behavior is believed to appear as a result of strong competition between direct exchange antiferromagnetic and superexchange ferromagnetic couplings established between both nearest neighbor and next nearest neighbor Cr3+ ions. We finally conjecture that the resulting magnetic order is stabilized via subtle vacancy/charge order within the lithium layers, potentially causing a mix of two co-existing magnetic phases within the sample., Springer Science and Business Media LLC
    Communications Materials, 2023年10月07日, [査読有り]
  • Unusually large magnetic moment and tricritical behavior of the CMR compound NaCr2O4 revealed with high resolution neutron diffraction and μ+SR               
    Elisabetta Nocerino; Ola Kenji Forslund; Hiroya Sakurai; Akinori Hoshikawa; Nami Matsubara; Daniel Andreica; Anton Zubayer; Federico Mazza; Takashi Saito; Jun Sugiyama; Izumi Umegaki; Yasmine Sassa and Martin Månsson
    J. Phys. Mater., 2023年07月, [査読有り]
  • Magnetic Ordering and Structural Phase Transitions of Nd3T4Sn13 (T = Rh and Ir)               
    Ami Shimoda; Kazuaki Iwasa; Keitaro Kuwahara; Hajime Sagayama; Hironori Nakao; Motoyuki Ishikado; Takashi Ohhara; Akiko Nakao; Akinori Hoshikawa; and Toru Ishigaki
    JPS Conf. Proc., 2023年05月, [査読有り]
  • 低合金TRIP 鋼の二相域温度によるミクロ組織形成依存性の中性子回折観察               
    河原幸汰; 梅村和希; 平野孝史; 小貫祐介; 星川晃範; 富田俊郎; 佐藤成男
    X線分析の進歩54, 2023年03月, [査読有り]
  • 〔主要な業績〕Observation of hydrogen bonding network in hydrogen sulfide hydrate using neutron diffraction               
    Akinori Hoshikawa; Akihiro Hachikubo
    Chem. Phys. Lett., 2023年02月, [査読有り]
  • Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe2 investigated by μ+ SR, neutron and X-ray diffraction               
    E. Nocerino; C. Witteveen; S. Kobayashi; O. K. Forslund; N. Matsubara; A. Zubayer; F. Mazza; S. Kawaguchi; A. Hoshikawa; I. Umegaki; J. Sugiyama; K. Yoshimura; Y. Sassa; F. O. von Rohr & M. Månsson
    Scientific reports, 2022年12月, [査読有り]
  • Crystal Structures and Conduction Paths of Sc-doped CaTiO3 Fast Oxide-ion Conductors with Orthorhombic Symmetry
    Katsuhiro Nomura; Shin-ichi Hashimoto; Tomoaki Namioka; Hiroaki Kato; Takeshi Hagiwara; Akinori Hoshikawa, American Chemical Society (ACS)
    Inorg. Chem., 2022年10月, [査読有り]
  • 〔主要な業績〕Structural changes due to the ordered guest molecules in deuterated ethane hydrate               
    Akinori Hoshikawa
    Chem. Phys. Lett., 2022年08月, [査読有り]
  • Direct Observation of Nucleus of Lithium in a C60 Fullerene Cage by Neutron Diffraction Study               
    E. Kwon; T. Matsukawa; A. Hoshikawa; T. Ishigaki; S. Aoyagi; K. Kawachi; Y. Kasama
    Chem. Phys. Lett., 2022年08月, [査読有り]
  • 硫化水素ハイドレートの結晶構造               
    茂筑 高士、星川 晃範、八久保 晶弘、勝矢 良雄、田中 雅彦、小西 繁輝、坂田 修身
    SPring-8/SACLA利用研究成果集, 2022年04月, [査読有り]
  • 中性子回折測定によるRietveld 解析を用いた低合金TRIP 鋼の相変態観察               
    梅村和希; 小貫祐介; 星川晃範; 富田俊郎; 田中泰明; 藤原知哉; 諏訪嘉宏; 河野佳織; 佐藤成男, 日本分析化学会
    X線分析の進歩53, 2022年03月, [査読有り]
  • Texture Memory in Si-Mn and ODS Steels Observed In Situ by Pulsed Neutron and Synchrotron X-Ray Diffractions and Prediction by Double Kurdjumov-Sachs Relation: A Concept for Intense Variant Selection               
    Toshiro Tomida; Elena Vakhitova; Denis Sornin; Jonathan Wright; Manuel François; Yusuke Onuki; Takashi Hirano; Akinori Hoshikawa; Toru Ishigaki; Shigeo Sato
    Metallurgical and Materials Transactions A, 2021年04月, [査読有り]
  • 〔主要な業績〕Automatic Sample Changer for In-situ Observation during Charging and Discharging Process of Battery               
    Akinori Hoshikawa; Toru Ishigaki
    JPS Conf. Proc., 2021年03月, [査読有り]
  • Rietveld texture解析を用いた鉄鋼ミクロ組織評価における等方性温度因子の影響               
    平野 孝史; 小貫 祐介; 星川 晃範; 富田 俊郎; 佐藤 成男, アグネ技術センター
    X線分析の進歩 51, 2020年03月, [査読有り]
  • Tetragonality induced superconductivity in anti-ThCr2 Si2-type RE2 O2 Bi (RE= rare earth) with Bi square nets
    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; Tomoteru Fukumura,

    Superconductivity in RE2O2Bi was universally governed by unit cell tetragonality c/a, irrespective of the usually destructive long-range magnetic ordering.

    , Royal Society of Chemistry (RSC)
    Dalton Transactions, 2020年03月, [査読有り]
  • In Situ Observation of Bainite Transformation and Simultaneous Carbon Enrichment in Austenite in Low-Alloyed TRIP Steel Using Time-of-Flight Neutron Diffraction Techniques               
    Y Onuki; T Hirano; A Hoshikawa; S Sato; T Tomida
    Metall. Mat. Trans. A, 2019年11月, [査読有り]
  • Composition-driven structural variation in ferrielectric phase of (Bi1/2Na1/2) TiO3-Ba (Mg1/3Nb2/3) O3
    Y. Kitanaka; K. Makisumi; Y. Noguchi; M. Miyayama; A. Hoshikawa; T. Ishigaki, IOP Publishing
    J. J. Appl. Phys., 2019年11月, [査読有り]
  • 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; Tomoteru Fukumura
    AIP Advances, 2019年11月, [査読有り]
  • Analysis of reverse transformation behavior in iron-based alloys based on quantitative microstructure information by neutron diffraction               
    Kenta Hanawa; Yusuke Onuki; Yuta Uemura; Akinori Hoshikawa; Shigeru Suzuki; Hiroaki Otsuka; Yuya Chiba; Shigeo Sato
    J. Iron Steel. Inst. Jpn., 2019年10月, [査読有り]
  • 〔主要な業績〕Evaluation of filling rate of methane in methane-propane hydrate by neutron powder diffraction               
    Akinori Hoshikawa; Takeshi Matsukawa; Toru Ishigaki
    Physica B, 2018年12月, [査読有り]
  • Z-MEM, Maximum Entropy Method software for electron/nuclear density distribution in Z-Code
    Yoshihisa Ishikawa; Junrong Zhang; Ryoji Kiyanagi; Masao Yonemura; Takeshi Matsukawa; Akinori Hoshikawa; Toru Ishigaki; Shuki Torii; Ryoko Oishi-Tomiyasu; Takashi Kamiyama
    Physica B, 2018年12月, [査読有り]
  • Local Disorder in Proton Conductor BaSn$_{0.5}$In$_{0.5}$O$_{2.75}$ Analyzed by Neutron Diffraction/ Atomic Pair Distribution Function               
    井川 直樹; 樹神 克明; 田口 富嗣; 吉田 幸彦; 松川 健; 星川 晃範; 石垣 徹
    Transactions of the Materials Research Society of Japan, 2018年12月, [査読有り]
  • Crystal structure and ferroelectric polarization of tetragonal (Bi1/2Na1/2) TiO3-12BaTiO3               
    Yuuki Kitanaka; Motohiro Ogino; Yuji Noguchi; Masaru Miyayama; Akinori Hoshikawa; Toru Ishigaki
    J. J. Appl. Phys., 2018年10月, [査読有り]
  • Neutron diffraction studies on valence ordering compound YbPd
    Kohei Oyama; Masaki Sugishima; Masaki Sugishima; Kousuke Tanabe; Akihiro Mitsuda; Hirofumi Wada; Kenji Ohoyama; Takeshi Matsukawa; Yukihiko Yoshida; Akinori Hoshikawa; Toru Ishigaki; Kazuaki Iwasa; Kazuaki Iwasa
    Journal of the Physical Society of Japan, 2018年10月, [査読有り]
  • Temperature-induced structural transition of ceria by bulk reduction under hydrogen atmosphere               
    T. Matsukawa; A. Hoshikawa; T. Ishigaki
    CrystEngComm, 2018年08月, [査読有り]
  • Large entropy change derived from orbitally assisted three-centered two-electron bond formation in metallic Li0.33VS2
    N Katayama; S Tamura; T Yamaguchi; K Sugimoto; K Iida; T Matsukawa; A Hoshikawa; T Ishigaki; S Kobayashi; Y Ohta; H Sawa, American Physical Society (APS)
    Physical Review B, 2018年08月, [査読有り]
  • Strain-Induced Martensitic Transformation and Texture Evolution in Cold-Rolled Co-Cr Alloys               
    Yusuke Onuki; Shigeo Sato; Maiko Nakagawa; Kenta Yamanaka; Manami Mori; Akinori Hoshikawa; Toru Ishigaki; Akihiko Chiba
    Quantum Beam Science, 2018年06月, [査読有り]
  • Development and verification of simultaneous measurement system for texture and phase fraction by time-of-flight neutron diffraction at iMATERIA               
    Y Onuki; A Hoshikawa; S Sato; S Nishino; T Ishigaki; T Tomida
    IOP Conf. Ser.: Mater. Sci. Eng., 2018年06月, [査読有り]
  • Rietveld texture analysis for metals having hexagonal close-packed phase by using time-of-flight neutron diffraction at iMATERIA
    Y. Onuki; A. Hoshikawa; S. Nishino; S. Sato; T. Ishigaki
    Adv. Eng. Mater., 2018年04月, [査読有り]
  • Mesoscopic Investigation of an “Immiscible” Cyclohexane and Water Micro-mixture in Carbon Micropores by Contrast Variation Small-angle Neutron Scattering               
    Masatsugu Yoshimoto; Yukihiko Yoshida; Yohei Noda; Satoshi Koizumi; Shinichi Takata; Junichi Suzuki; Akinori Hoshikawa; Toru Ishigaki; Sumio Ozeki; Taku Iiyama
    Chem. Lett., 2018年01月, [査読有り]
  • Crystal structure of blue-colored ceria during redox reactions in a hydrogen atmosphere
    Takeshi Matsukawa; Akinori Hoshikawa; Eiki Niwa; Masatomo Yashima; Toru Ishigaki
    CrystEngComm, 2018年01月, [査読有り]
  • Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments
    Kenji Nakajima; Yukinobu Kawakita; Shinichi Itoh; Jun Abe; Kazuya Aizawa; Hiroyuki Aoki; Hitoshi Endo; Masaki Fujita; Kenichi Funakoshi; Wu Gong; Masahide Harada; Stefanus Harjo; Takanori Hattori; Masahiro Hino; Takashi Honda; Akinori Hoshikawa; Kazutaka Ikeda; Takashi Ino; Toru Ishigaki; Yoshihisa Ishikawa; Hiroki Iwase; Tetsuya Kai; Ryoichi Kajimoto; Takashi Kamiyama; Naokatsu Kaneko; Daichi Kawana; Seiko Ohira-Kawamura; Takuro Kawasaki; Atsushi Kimura; Ryoji Kiyanagi; Kenji Kojima, Katsuhiro
    Quantum Beam Sci., 2017年12月, [査読有り]
  • TOF型パルス中性子回折を用いた金属ミクロ組織解析
    佐藤 成男、小貫 祐介、星川 晃範、中川 真惟子、山中 謙太、富田 俊郎, アグネ技術センター
    金属, 2017年11月, [査読有り]
  • Quantitative phase fraction analysis of steel combined with texture analysis using timeof-flight neutron diffraction               
    Yusuke Onuki; Akinori Hoshikawa; Shigeo Sato; Toru Ishigaki; Toshiro Tomida
    J. Phys. Soc. Jpn., 2017年10月, [査読有り]
  • Time-of-Flight Elastic and Inelastic Neutron Scattering Studies on the Localized 4d Electron Layered Perovskite La5Mo4O16
    Kazuki Iida; Ryoichi Kajimoto; Yusuke Mizuno; Kazuya Kamazawa; Yasuhiro Inamura; Akinori Hoshikawa; Yukihiko Yoshida; Takeshi Matsukawa; Toru Ishigaki; Yukihiko Kawamura; Soshi Ibuka; Tetsuya Yokoo5; Shinichi Itoh; and Takuro Katsufuji
    J. Phys. Soc. Jpn., 2017年05月, [査読有り]
  • Unusually Stable Plastic Crystal Phase of CCl4 Confined in Graphitic Slit-shaped Micropores from Neutron Diffraction
    Masatsugu Yoshimoto; Ryusuke Futamura; Akinori Hoshikawa; Toru Ishigaki; Taro Uchida; Taku Iiyama,

    Structural changes with temperature of CCl4 confined in a 1.1 nm slit-shaped carbon nanospace were investigated by neutron diffraction (ND) measurements and radial distribution function fdrdf analyses. Bulk CCl4 exhibits a plastic crystal (PC) phase between 225.5 and 250 K. In the confined space, although clear phase transition points cannot be determined, fdrdf suggests that the PC phase extends to temperatures as low as 160 K. The smooth surface of the activated carbon assists the rotational motion of CCl4.

    , 公益社団法人 日本化学会
    Chem. Lett., 2017年04月, [査読有り]
  • Evaluation of hydrogen-bonding distance in organic nonlinear optical crystals for high-output terahertz-wave generation
    Takeshi Matsukawa; Akinori Hoshikawa; Yoshihisa Ishikawa; Toru Ishigaki
    J. Mol. Struct., 2017年04月, [査読有り]
  • マクロ・ミクロスケール集合組織測定を併用したAZ31マグネシウム合金の室温変形機構の検討               
    小貫祐介、星川晃範、佐藤成男、石垣徹, 一般社団法人 軽金属学会
    軽金属, 2016年11月, [査読有り]
  • Rapid measurement of texture of metals by time-of-flight neutron diffraction at iMATERIA and its applications
    Yusuke Onuki; Akinori Hoshikawa; Shigeo Sato; Toru Ishigaki
    Materials Science Forum, 2016年11月, [査読有り]
  • Rapid measurement scheme for texture in cubic metallic materials using time-of-flight neutron diffraction at iMATERIA
    Yusuke Onuki; Akinori Hoshikawa; Shigeo Sato; Pingguang Xu; Toru Ishigaki; Yoichi Saito; Hidekazu Todoroki; Makoto Hayashi, A rapid texture measurement system has been developed on the time-of-flight neutron diffractometer iMATERIA (beamline BL20, MLF/J-PARC, Japan). Quantitative Rietveld texture analysis with a neutron beam exposure of several minutes without sample rotation was investigated using a duplex stainless steel, and the minimum number of diffraction spectra required for the analysis was determined experimentally. The rapid measurement scheme employs 132 spectra, and by this scheme the quantitative determination of volume fractions of texture components in ferrite and austenite cubic phases in a duplex stainless steel can be made in a short time. This quantitative and rapid measurement scheme is based on the salient features of iMATERIA as a powder diffractometer, i.e. a fairly high resolution in d spacing and numerous detectors covering a wide range of scattering angle.
    Journal of Applied Crystallography, 2016年10月, [査読有り]
  • Temperature Dependence of Crystal Structure and THz Absorption Spectra of Organic Nonlinear Optical Stilbazolium Material for High-Output THz-Wave Generation               
    Takeshi Matsukawa; Hiromichi Hoshina; Akinori Hoshikawa; Chiko Otani; Toru Ishigaki
    J. Infrared Milli Terahz Waves, 2016年06月, [査読有り]
  • Deformation mechanism of AZ31 magnesium alloy at room temperature studied by macro and micro texture measurements
    Yusuke Onuki; Akinori Hoshikawa; Shigeo Sato; Toru Ishigaki, Japan Institute of Light Metals
    Keikinzoku/Journal of Japan Institute of Light Metals, 2016年
  • 20pPSB-30 価数秩序物質YbPdの粉末中性子回折
    大山 耕平; 光田 暁弘; 大山 研司; 松川 健; 吉田 幸彦; 星川 晃範; 石垣 徹; 岩佐 和晃; 和田 裕文, 一般社団法人日本物理学会
    日本物理学会講演概要集, 2016年
  • Forge-Hardened TiZr Null-Matrix Alloy for Neutron Scattering under Extreme Conditions               
    Takuo Okuchi; Akinori Hoshikawa and Toru Ishigaki
    Metals, 2015年12月, [査読有り]
  • 〔主要な業績〕Structure Analysis of Propane Hydrates               
    Akinori Hoshikawa; Yukihiko Yoshida; Takeshi Matsukawa; and Toru Ishigaki
    JPS Conf. Proc., 2015年09月, [査読有り]
  • Crystal Structure of the Fe1-xSr2YCu2+xO6+δ Magnetic Superconductor               
    Takashi Mochiku; Yoshiaki; Hata; Akinori Hoshikawa; Toru Ishigaki; Hiroshi Yasuoka; and Kazuto Hirata
    JPS Conf. Proc., 2015年09月, [査読有り]
  • Crystal-Local Structure Analyses for Cathode LIBs LiNi1-xCoxO2 (0
    Dyah S. Adipranoto; Masao Yonemura; Yoshihisa Ishikawa; Akinori Hoshikawa; Toru Ishigaki; Takashi Kamiyama; Yoshiharu Uchimoto; Zempachi Ogumi
    JPS Conf. Proc., 2015年09月, [査読有り]
  • Local lattice distortion caused by short-range charge ordering in transition metal oxides
    樹神 克明; 井川 直樹; 社本 真一; 池田 一貴; 大下 英敏; 金子 直勝; 大友 季哉; 鈴谷 賢太郎; 星川 晃範; 石垣 徹, Cubic spinel compound LiMn$_2$O$_4$ with the mixed valence of Mn$^{3.5+}$ has non-metallic conductivity. The local structure determined by the PDF analysis has an orthorhombic lattice distortion and includes inequivalent Mn$^{3+}$ and Mn$^{4+}$ sites. YBaCo$_2$O$_5$ also exhibits non-metallic conductivity although the Co has the mixed valence of +2.5 above 220 K which corresponds with charge ordering temperature. The PDF obtained at 450 K is not reproduced by the PDF calculated for the averaged structure and can be reproduced by the PDF calculated for the structure model corresponding to the charge ordering state. These results suggest that the valence electrons are localized with short-range periodicity, resulting in the non-metallic conductivities in these materials.
    JPS Conference Proceedings (Internet), 2015年09月, [査読有り]
  • Synthesis and transport properties of ternary type-I Si clathrate K8Al7Si39               
    S. K. Singh; T. Mochiku; S. Ibuka; Y. Isoda; A. Hoshikawa; T. Ishigaki and M. Imai
    Jpn. J. Appl. Phys., 2015年08月, [査読有り]
  • Neutron crystal structure analysis of stilbazolium derivatives for terahertz-wave generation               
    T. Matsukawa; Y. Yoshida; A. Hoshikawa; S. Okada; and T. Ishigaki
    CrystEngComm, 2015年04月, [査読有り]
  • Identification of Various Coexisting Phases in Superconducting and Non-superconducting Samples of RbxFe2-ySe2               
    Y. Kobayashi; S. Kototani; K. Ohishi; M. Itoh; A. Hoshikawa; T. Ishigaki; and M. Sato
    J. Phys. Soc. Jpn., 2015年03月, [査読有り]
  • 21aPS-107 ハニカム格子を形成するスピン系Li_3Ni_2AO_6 (A=Sb, Bi)の磁気ダイナミクスと磁気構造
    福井 皓人; 安井 幸夫; 星川 晃範; 石垣 徹; 井川 直樹, 一般社団法人日本物理学会
    日本物理学会講演概要集, 2015年
  • New O2/P2-type Li-Excess Layered Manganese Oxides as Promising Multi-Functional Electrode Materials for Rechargeable Li/Na Batteries               
    Naoaki Yabuuchi; Ryo Hara; Masataka Kajiyama; Kei Kubota; Toru Ishigaki; Akinori Hoshikawa and Shinichi Komaba
    Adv. Energy Mater., 2014年09月, [査読有り]
  • Neutron diffraction studies on structural effect for Ni-doping in LiCo1-xNixO2
    Dyah S. Adipranotoa; Toru Ishigaki; Akinori Hoshikawa; Kenji Iwase; Masao Yonemura; Kazuhiro Mori; Takashi Kamiyama; Yukio Morii; Makoto Hayashi
    Solid State Ion., 2014年09月, [査読有り]
  • Slow dynamics in the geometrically frustrated magnet ZnFe2O4: Universal features of aging phenomena in spin glasses               
    H. Mamiya; N. Tsujii; N. Terada; S. Nimori; H. Kitazawa; A. Hoshikawa; and T. Ishigaki
    Phys. Rev. B, 2014年07月, [査読有り]
  • Local structural analysis by using atomic pair distribution function on mixed valence compound LiMn$_2$O$_4$
    樹神 克明; 井川 直樹; 社本 真一; 池田 一貴; 大下 英敏; 金子 直勝; 大友 季哉; 鈴谷 賢太郎; 星川 晃範; 石垣 徹, LiMn$_2$O$_4$ has a cubic spinel structure with a single Mn site whose valence is +3.5. Below about 260 K, the compound exhibits a charge ordering and has inequivalent Mn sites with valences of +3 and +4. However, even in the cubic phase without the charge ordering, temperature dependence of the electrical conductivity is non-metallic. We have performed PDF (atomic pair distribution function) analysis on powder neutron diffraction data of LiMn$_2$O$_4$ obtained above 300 K where the compound has cubic structure. The local structure determined by PDF analysis has an orthorhombic lattice distortion and includes the inequivalent Mn sites with valences of +3 and +4 up to, at least, about 450 K. These results indicate that valence electrons are localized at Mn sites with short range periodicity, resulting in the non-metallic electrical conductivity. It can be regarded as a glass state of valence electrons whereas a charge ordering can be regarded as a crystallization of valence electrons.
    JPS Conference Proceedings (Internet), 2014年06月, [査読有り]
  • New Perovskite-Related Structure Family of Oxide-Ion Conducting Materials NdBaInO4               
    Kotaro Fujii; Yuichi Esaki; Kazuki Omoto; Masatomo Yashima; Akinori Hoshikawa; Toru Ishigaki; and James R. Hester
    Chem. Mater., 2014年04月, [査読有り]
  • Spin State of Co3+ in LaCo1-xRhxO3 Investigated by Structural Phenomena
    Shinichiro Asai; Ryuji Okazaki; Ichiro Terasaki; Yukio Yasui; Wataru Kobayashi; Akiko Nakao; Kensuke Kobayashi; Reiji Kumai; Hironori Nakao; Youichi Murakami; Naoki Igawa; Akinori Hoshikawa; Toru Ishigaki; Outi Parkkima; Maarit Karppinen; Hisao Yamauchi
    J. Phys. Soc. Jpn., 2013年11月, [査読有り]
  • A Comparative Study of LiCoO2 Polymorphs: Structural and Electrochemical Characterization of O2-, O3-, and O4-type Phases               
    Naoaki Yabuuchi; Yuta Kawamoto; Ryo Hara; Toru Ishigaki; Akinori Hoshikawa; Masao Yonemura; Takashi Kamiyama; Shinichi Komaba
    Inorg. Chem., 2013年07月, [査読有り]
  • Annealing effect on structure and superconductivity in FeSr2YCu2O6+δ magnetic superconductor               
    T.Mochiku; Y.Hata; K.Yamaguchi; Y.Tsuchiya; A.Hoshikawa; K.Iwase; D.Sulistyanintyas; T.Ishigaki; H.Yasuoka; K.Hirata
    Physics Procedia, 2013年01月, [査読有り]
  • Structure Determination of Hydrogen-bonding Network of Water in Hydrophobic Nanospace by Neutron and X-ray Diffractions               
    Taku Iiyama; Fumika Fujisaki; Ryusuke Futamura; Atom Hamasaki; Sumio Ozeki; Akinori Hoshikawa; Toru Ishigaki
    Chem. Lett., 2012年10月, [査読有り]
  • Crystal structure of GdNi3 with superlattice alloy and its hydrogen absorption-desorption property
    K. Iwase; K. Mori; A. Hoshikawa; T. Ishigaki
    Int. J. Hydrogen Energy, 2012年10月, [査読有り]
  • Crystal and local structure of lithium cobalt oxide studied by neutron diffraction               
    D. S. Adipranoto; T. Ishigaki; A. Hoshikawa; K. Iwase; H. Oguro; M. Yonemura; K. Mori; T. Kamiyama
    Solid State Ionics: Ionics for Sustainable World, Proceedings of the Asian Conference 13th, 2012年07月, [査読有り]
  • Application of matrix decomposition algorithms for singular matrices to the Pawley method in Z-Rietveld
    R. Oishi-Tomiyasu; M. Yonemura; T. Morishima; A. Hoshikawa; T. Ishigaki; S. Torii; T. Ishigaki; T. Kamiyama
    Journal of Applied Crystallography, 2012年04月, [査読有り]
  • Hydrogenation and structural properties of Gd2Ni7 with superlattice structure
    K. Iwase; K. Mori; A. Hoshikawa; T. Ishigaki
    Int. J. Hydrogen Energy, 2012年03月, [査読有り]
  • Neutron diffraction study on the Xe behavior in clathrate hydrate analyzed by Rietveld/maximum entropy method
    N. Igawa; T. Taguchi; A. Hoshikawa; H. Yamauchi; A. Birumachi; Y. Ishii
    IOP Conf. Series: Materials Science and Engineering, 2011年10月, [査読有り]
  • Synthesisi of New Compound Gd5Ni19 with a Superlattic Structure and Hydrogen Absorption Properties
    K. Iwase; K. Mori; A. Hoshikawa; T. Ishigaki
    Inorg. Chem., 2011年10月, [査読有り]
  • Structural and Magnetic Properties of Dilute Spinel Ferrites: Neutron Diffractometry and Magnetometry Investigations               
    H. Mamiya; N. Terada; H. Kitazawa; A. Hoshikawa; T. Ishigaki
    Journal of Magnetics, 2011年06月, [査読有り]
  • Three-Dimensional Strain Model for Various Kinds of Nb3Sn Wires
    H. Oguro; S. Awaji; K. Watanabe; G. Nishijima; T. Ishigaki; A. Hoshikawa; K. Iwase; M. Yonemura; D. S. Adipranoto
    IEEE Trans. Appl. Supercond., 2011年06月, [査読有り]
  • Change in Crystal Structure of LiNi0.8Co0.19Cu0.01O2 Cathode during Charge of Coin Cell Observed by Ex Situ Time-of-flight Neutron Diffraction               
    Yasushi Idemoto; Yuta Tsukada; Naoto Kitamura; Akinori Hoshikawa; Toru Ishigaki
    CHEMISTRY LETTERS, 2011年01月, [査読有り]
  • 〔主要な業績〕Automatic sample changer for IBARAKI materials design diffractometer (iMATERIA)               
    Akinori Hoshikawa; Toru Ishigaki; Masao Yonemura; Kenji Iwase; Hidetoshi Oguro; Dyah Sulistyanintyas; Takashi Kamiyama; Makoto Hayashi
    J. Phys. Conf. Ser., 2010年12月, [査読有り]
  • Low temperature structure of FeSr2YCu2O6+d magnetic superconductor
    T. Mochiku; Y. Hata; T. Wuernisha; N. Igawa; A. Hoshikawa; T. Ishigaki; H. Yasuoka; K. Hirata
    Physica C, 2010年12月, [査読有り]
  • On execution of Pawley method without requiring intensity constraints on overlapping reflections               
    R.Oishi-Tomiyasu; M. Yonemura; A. Hoshikawa; S.Torii; T. Ishigaki; T. Kamiyama
    Acta Cryst., 2010年09月, [査読有り]
  • CO2 motion in carbon dioxide deuterohydrate determined by applying maximum entropy method to neutron powder diffraction data
    N. Igawa; T. Taguchi; A. Hoshikawa; H. Fukazawa; H. Yamauchi; W. Utsumi; Y. Ishii
    J. Phys. Chem. Solids, 2010年06月, [査読有り]
  • Effect of intervening structure between CuO2 sheets in heavily Fe-substituted high-Tc superconductor FeSr2YCu2O6+d               
    T.Mochiku; Y.Hata; T.Wuernisha; Y.Matsushita; Y.Katsuya; S.Ishimaru; M.Tanaka; K.Kobayashi; A.Hoshikawa; T. Ishigaki; H. Yasuoka; K. Hirata
    Physica C, 2009年10月, [査読有り]
  • Substitution effect in FeSr2YCu2O6+δ magnetic superconductor               
    Takashi Mochiku; Tuerxun Wuernisha; Yoshiaki Hata; Akinori Hoshikawa; Hijiri Kito; Hiroshi Yasuoka; Kazuto Hirata
    J. Phys. Conf. Ser., 2009年03月, [査読有り]
  • Existence of ferroelectric ice on planets-A neutron diffraction study               
    Hiroshi Fukazawa; Akinori Hoshikawa; Bryan C. Chakoumakos; Jaime A. Fernandez-Baca
    Nucl. Instr. Meth. Phys. Res. A, 2009年02月, [査読有り]
  • Rietveld analysis software for J-PARC
    R. Oishi; M.Yonemura; Y.Nishimaki; S.Torii; A.Hoshikawa; T.Ishigaki; T.Morishima; K. Mori; T.Kamiyama
    Nucl. Instr. Meth. Phys. Res. A, 2009年02月, [査読有り]
  • IBARAKI materials design diffractometer (iMATERIA)-Versatileneutron diffractometer at J-PARC
    T.Ishigaki; A.Hoshikawa; M.Yonemura; T.Morishima; T.Kamiyama; R.Oishi; K.Aizawa; T.Sakuma; Y.Tomota; M.Arai; M.Hayashi; K.Ebata; Y.Takano; K.Komatsuzaki; H.Asano; Y.Takano; T.Kasao
    Nucl. Instr. Meth. Phys. Res. A, 2009年02月, [査読有り]
  • 〔主要な業績〕Development of an automatic sample changer for iMATERIA
    A.Hoshikawa; T.Ishigaki; M.Nagai; Y.Kobayashi; H.Sagehashi; T.Kamiyama; M.Yonemura; K. Aizawa; T.Sakuma; Y.Tomota; M.Arai; M.Hayashi; K.Ebata; Y.Takano; T.Kasao
    Nucl. Instr. Meth. Phys. Res. A, 2009年02月, [査読有り]
  • Ferroelectric distortion and electronic structure in Bi4Ti3O12               
    Yuji Noguchi; Takashi Goto; Masaru Miyayama; Akinori Hoshikawa; Takashi Kamiyama
    J. Electroceram, 2008年12月, [査読有り]
  • Cation disorder and superconductivity in the Fe-based copper oxide FeSr2Y1-xNdxCu2O6+d               
    T. Wuernisha; T. Mochiku; Y. Hata; A. Hoshikawa; H. Fujii; H. Yasuoka; H. Kitazawa
    Physica C, 2008年09月, [査読有り]
  • Neutron diffraction study of Nd-substituted FeSr2YCu2O6+d magnetic superconductor               
    T. Mochiku; T. Wuernisha; Y. Hata; A. Hoshikawa; H. Fujii; H. Yasuoka; K. Hirata
    Physica C, 2008年09月, [査読有り]
  • Neutron diffraction studies of the magnetic ordering in the spinel oxide system MgxCo1-xCrxFe2-xO4
    S.M. Yunus; H. Yamauchi; A.K.M. Zakaria; N. Igawa; A. Hoshikawa; Yoshinori Haga and Yoshinobu Ishii
    J. Alloys and Comp., 2008年05月, [査読有り]
  • Cation distribution and crystallographic characterization of the quaternary spinel system MgxCo1-xCrxFe2-xO4
    S. M. Yunus; H. Yamauchi; A. K. M. Zakaria; N. Igawa; A. Hoshikawa; Y. Ishii
    J. Alloys and Compounds, 2008年04月, [査読有り]
  • 〔主要な業績〕In situ observation of CH4 hydrate growth by neutron powder diffraction               
    A. Hoshikawa; H. Fukazawa; N. Igawa; H. Yamauchi; Y. Ishi; T. Ishigaki
    Acta Cryst., 2008年01月, [査読有り]
  • Versatile IBARAKI materials design neutron diffractometer at J-PARC
    T. Ishigaki; A. Hoshikawa; M. Yonemura; T. Kamiyama; S. Harjo; K. Aizawa; T. Sakuma; Y. Tomota; Y. Morii; M. Arai; M. Hayashi; K. Ebata; Y. Takano; T. Kasao
    Zeitschrift fur Kristallographie, Supplement, 2007年12月01日
  • Neutron Diffraction Study on the Defect Structure of Ta-Substituted Zn2TiO4 Oxide Ion Conductors               
    Sigeomi Takai; Takayuki Shinohara; Akinori Hoshikawa; Stefanus Harjo; Kenichi Oikawa; Toru Ishigaki; Takashi Kamiyama and Takao Esaka
    J. Ceramic Soc. Jpn., 2007年11月, [査読有り]
  • Investigation of the Oxide Ion Conduction Mechanism in LaGaO3-Based Electrolytes through High-Temperature Neutron Powder Diffraction               
    M. Kajitani; M. Matsuda; A. Hoshikawa; T. Kamiyama; F. Izumi; M. Miyake
    Key Eng. Mat., 2007年10月, [査読有り]
  • Doping effect on crystal structure and conduction property of fast oxide ion conductor LaGaO3-based perovskite               
    M. Kajitani; M. Matsuda; A. Hoshikawa; S. Harjo; T. Kamiyama; T. Ishigaki; F. Izumi; M. Miyake
    J. Phys. Chem. Solid., 2007年05月, [査読有り]
  • Magnetic structural characterization of Mg-Co-Cr ferrite by neutron diffraction
    S.M. Yunus; Hiroki Yamauchi; A.K.M. Zakaria; Naoki Igawa; Akinori Hoshikawa and Yoshinobu Ishii
    J. Mag. Mag. Mat., 2007年03月, [査読有り]
  • Correlation Of The Superconductivity With The Multi‐Stack Structure In MgB2‐Type Superconductor CaAlSi
    Hajime Sagayama; Yusuke Wakabayashi; Hiroshi Sawa; Takashi Kamiyama; Akinori Hoshikawa; Stefanus Harjo; Kentaro Uosato; Ajay K. Ghosh; Masashi Tokunaga; and Tsuyoshi Tamegai
    AIP Conf. Proc., 2006年12月, [査読有り]
  • Erratum to "Structural change in a series of protonated layered perovskite compounds, HLnTiO4 (Ln=La, Nd and Y)". [J. Solid State Chem. 179 (2006) 1892-1897] (DOI:10.1016/j.jssc.2006.03.015)
    Shunsuke Nishimoto; Motohide Matsuda; Stefanus Harjo; Akinori Hoshikawa; Takashi Kamiyama; Toru Ishigaki; Michihiro Miyake
    Journal of Solid State Chemistry, 2006年11月, [査読有り]
  • Multiferroic Behavior and Two dimensitonal Magnetism of Hexagonal Manganites               
    Seongsu Lee; Misun Kang; Changhee Lee; A. Hoshikawa; M. Yonemura; T. Kamiyama; J.-G. Park
    Physica B, 2006年11月, [査読有り]
  • Structure phase transition in FeSr2YCu2O6+δ
    Takashi Mochiku; Yoshiaki Hata; Kenji Iwase; Masao Yonemura; Stefanus Harjo; Akinori Hoshikawa; Kenichi Oikawa; Toru Ishigaki; Takashi Kamiyama; Hiroki Fujii; Fujio Izumi; Kazuo Kadowaki; Kazuto Hirata
    Physica B: Condensed Matter, 2006年11月, [査読有り]
  • Deuteron ordering in ice containing impurities: A neutron diffraction study
    H. Fukazawa; A. Hoshikawa; H. Yamauchi; Y. Yamaguchi; N. Igawa; Y. Ishii
    Physica B, 2006年11月, [査読有り]
  • Neutron diffraction study on protonated and hydrated layered perovskite
    Shunsuke Nishimoto; Motohide Matsuda; Stefanus Harjo; Akinori Hoshikawa; Toru Ishigaki; Takashi Kamiyama; Michihiro Miyake
    Journal of Solid State Chemistry, 2006年11月, [査読有り]
  • Existence of Ferroelectric Ice in the Universe
    H. Fukazawa; A. Hoshikawa; Y. Ishii; B. C. Chakoumakos; J. A. Fernandez-Baca
    ApJ., 2006年11月, [査読有り]
  • 〔主要な業績〕Neutron Powder Diffraction Study of Methane Hydrate by the Rietveld Refinement and Maximum Entropy Method
    Akinori Hoshikawa; Naoki Igawa; Hiroki Yamauchi; Yoshinobu Ishii
    Physica B, 2006年11月, [査読有り]
  • 〔主要な業績〕Observation of hydrogen in deuterated methane hydrate by maximum entropy method with neutron powder diffraction
    Akinori Hoshikawa; Naoki Igawa; Hiroki Yamauchi; Yoshinobu Ishii
    J. Chem. Phys., 2006年07月, [査読有り]
  • Two Types of Multistack Structures in MgB2-Type Superconductor CaAlSi               
    Hajime Sagayama; Yusuke Wakabayashi; Hiroshi Sawa; Takashi Kamiyama; Akinori Hoshikawa; Stefanus Harjo; Kentaro Uozato; Ajay K. Ghosh; Masashi Tokunaga and Tsuyoshi Tamegai
    J. Phys. Soc. Jpn., 2006年04月, [査読有り]
  • Doping effect on crystal structure of fast oxide ion conductor LaGaO 3-based perovskite compounds
    Masahiro Kajitani; Motohide Matsuda; Akinori Hoshikawa; Takashi Kamiyama; Fujio Izumi; Michihiro Miyake
    Key Engineering Materials, 2006年, [査読有り]
  • Structural change in a series of protonated layered perovskite compounds, HLnTiO4 (Ln=La, Nd and Y)               
    S. Nishimoto; M. Matsuda; S. Harjo; A. Hoshikawa; Takashi Kamiyama; Toru Ishigaki and Michihiro Miyake
    J. Solid State Chem, 2006年01月, [査読有り]
  • Structure determination of n=1 Ruddlesden Popper compound HLaTiO4 by powder neutron diffraction               
    S. Nishimoto; M. Matsuda; S. Harjo; A. Hoshikawa; Takashi Kamiyama; Toru Ishigaki and Michihiro Miyake
    J. Eur. Ceramic Soc., 2006年01月, [査読有り]
  • 〔主要な業績〕Neutron powder diffraction study of methane deuterohydrate by the maximum entropy method
    Akinori Hoshikawa; Naoki Igawa; Hiroki Yamauchi; Yoshinobu Ishii
    J. Phys. Chem. Solid., 2005年10月, [査読有り]
  • In Situ Neutron Diffraction Study on Fast Oxide Ion Conductor LaGaO3-Based Perovskite Compounds               
    Masahiro Kajitani; Motohide Matsuda; Akinori Hoshikawa; Stefanus Harjo; Takashi Kamiyama; Toru Ishigaki; Fujio Izumi; and Michihiro Miyake
    Chem. Mater., 2005年08月, [査読有り]
  • Formation and growth of ice XI: A powder neutron diffraction study
    Hiroshi Fukazawa; Akinori Hoshikawa; Hiroki Yamauchi; Yasuo Yamaguchi; Yoshinobu Ishii
    J. Crystal Growth, 2005年08月, [査読有り]
  • Direct observation of a coupling between spin, lattice and electric dipole moment in multiferroic YMnO3               
    S. Lee; A. Pirogov; J. H. Han; J.-G. Park; A. Hoshikawa; and T. Kamiyama
    Phys. Rev. B, 2005年05月, [査読有り]
  • Time-Of-Flight Neutron Powder Diffraction Studies on a Chiral Two-Dimensional Molecule-Based Magnet
    Akinori Hoshikawa; Takashi Kamiyama; Agus Purwanto; Kazuki Ohishi; Wataru Higemoto; Toru Ishigaki; Hiroyuki Imai; Katsuya Inoue
    J. Phys. Soc. Jpn., 2004年10月, [査読有り]
  • Neutron diffraction and IR spectroscopy on mechanically alloyed La-substituted PbWO4               
    Shigeomi Takai; Tomohoro Nakanishi; Kenichi Oikawa; Shuki Torii; Akinori Hoshikawa; Takashi Kamiyama and Takao Esaka
    Solid State Ion., 2004年05月, [査読有り]
  • FeSr2YCu2O6+δ系超伝導体における構造相転移
    茂筑 高士; Harjo Stefanus; 星川 晃範; 及川 健一; 石垣 徹; 神山 崇; 門脇 和男; 平田 和人, FeSr2YCu2O6+δは、CuO2面を持つ高温超伝導体の類縁化合物であるが、単に大気中で合成されただけでは超伝導は発現されない。まず窒素雰囲気で、続いて酸素雰囲気でアニールすることにより、はじめて50 K程度の超伝導体となる。このアニール過程を通して、CuとFeのc軸方向の秩序配列が促進され、続いて酸素アニールにより還元されたFeOδ面上の酸素が補填される。しかしながら、上記の秩序配列とは異なる秩序配列を示す回折が観測され、超伝導化との関連が示唆されたため、高温その場中性子回折によって、アニール過程に沿って結晶構造解析を行い、これらの構造を検討した。, 公益社団法人 日本セラミックス協会
    日本セラミックス協会 年会・秋季シンポジウム 講演予稿集, 2004年
  • Crystal structure analysis of -tricalcium phosphate Ca3(PO4)2 by neutron powder diffraction               
    Masatomo Yashima; Atsushi Sakai; Takashi Kamiyama and Akinori Hoshikawa
    J. Solid State Chem., 2003年11月, [査読有り]
  • Neutron Diffraction Study on Lanthanum Gallate Perovskite Compound Series               
    Masahiro Kajitani; Motohide Matsuda; Akinori Hoshikawa; Ken-ichi Oikawa; Shunki Torii; Takashi Kamiyama; Fujio Izumi; and Michihiro Miyake
    Chem. Mater., 2003年09月, [査読有り]
  • High-temperature phase transition in lanthanum titanate perovskite La0.64(Ti0.92,Nb0.08)O3               
    Masatomo Yashima; Mizuki Mori; Takashi Kamiyama; Ken-ichi Oikawa; Akinori Hoshikawa; Shuki Torii; Koh Saitoh and Kenji Tsuda
    Chem. Phys. Lett., 2003年06月, [査読有り]
  • Electrical transport in the spin-density-wave phase of (TMTSF-d(12))(2)ClO4
    A Hoshikawa; T Terazaki; N Matsunaga; K Nomura; M Watanabe; S Nakatsuji; J Yamada
    SYNTHETIC METALS, 2003年03月, [査読有り]
  • 〔主要な業績〕Non-linear electric conduction in the SDW phase of (TMTSF)2NO3
    A. Hoshikawa; T. Terazaki; K. Nomura; M. Tokumoto and J. M. Fabre
    Synth. Met., 2001年03月, [査読有り]
  • Collective mode of spin-density-wave in (TMTSF)(2)ClO4
    A Hoshikawa; K Nomura; S Takasaki; J Yamada; S Nakatsuji; H Anzai; M Tokumoto; N Kinoshita
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000年05月, [査読有り]
  • 〔主要な業績〕Collective Mode of Spin-Density-Wave in (TMTSF)2ClO4
    Akinori HOSHIKAWA; Kazushige NOMURA; Satoshi TAKASAKI; Jun-ichi YAMADA; Shin’ichi NAKATSUJI; Hiroyuki ANZAI; Madoka TOKUMOTO and Nobumori KINOSHITA
    J. Phys. Soc. Jpn., 2000年05月, [査読有り]
  • 〔主要な業績〕Depinning of Spin-Density-Wave in (TMTSF)2ClO4
    Akinori HOSHIKAWA; Kazushige NOMURA; Satoshi TAKASAKI; Jun-ichi YAMADA; Shin’ichi NAKATSUJI; Hiroyuki ANZAI; Madoka TOKUMOTO and Nobumori KINOSHITA, Physical Society of Japan
    J. Phys. Soc. Jpn., 2000年01月, [査読有り]
  • 〔主要な業績〕Non-linear conductance in SDW phase of (TMTSF)2ClO4
    A. Hoshikawa; K. Nomura; S. Takasaki; J. Yamada; S. Nakatsuji; H. Anzai; M. Tokumoto; N. Kinoshita
    Synth. Met., 1999年06月, [査読有り]
  • 〔主要な業績〕Sliding of the spin-density wave in (TMTSF)2ClO4
    A. Hoshikawa; K. Nomura; T. Sambongi; S. Takasaki; J. Yamada; S. Nakatsuji; H. Anzai; M. Tokumoto and N. Kinoshita
    Synth. Met., 1997年02月, [査読有り]

MISC

担当経験のある科目(授業)

  • 量子ビーム応用解析               
    茨城大学

所属学協会

  • 2017年 - 現在, 雪氷学会
  • 2016年 - 現在, 日本エネルギー学会
  • 日本結晶学会
  • 日本中性子科学会

共同研究・競争的資金等の研究課題