西正和 (Masakazu Nishi) - マイポータル

基本情報

所属: 東京大学物性研究所附属中性子科学研究施設助教
: 早稲田大学先進理工学部非常勤講師

学位: 理学博士(東京大学理学研究科)

J-GLOBAL ID: 200901087817590540
researchmap会員ID: 1000255709

研究キーワード

研究分野

自然科学一般 / 磁性、超伝導、強相関系 /

経歴

委員歴

2003年 - 2004年

日本中性子科学会, 会計幹事

論文

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 …

INORGANIC CHEMISTRY 50(9) 3988-3995 2011年5月査読有り
A Question on the Kohn Anomaly and Screening Effects in Pt and Pt Alloys

Yorihiko Tsunoda, Takuro Kodama, Masakazu Nishi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 80(5) 054603-1-054603-5 2011年5月査読有り
BaFeO3: A Ferromagnetic Iron Oxide

Naoaki Hayashi, Takafumi Yamamoto, Hiroshi Kageyama, Masakazu Nishi, Yoshitaka Watanabe, Takateru Kawakami, Yoshitaka Matsushita, Atsushi Fujimori, Mikio Takano

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 50(52) 12547-12550 2011年査読有り
ToF inelastic neutron scattering studies on quantum spin systems (CuCl)LaB2O7 (B = Nb, Ta)

S. Ohira-Kawamura, K. Nakajima, Y. Inamura, Y. Tsujimoto, A. Kitada, F. Takeiri, H. Kageyama, Y. Ajiro, M. Nishi, K. Kakurai

INTERNATIONAL CONFERENCE ON FRUSTRATION IN CONDENSED MATTER (ICFCM) 320 012037-1-012037-5 2011年査読有り
Two-Dimensional S=1 Quantum Antiferromagnet (NiCl)Sr2Ta3O10

Yoshihiro Tsujimoto, Atsushi Kitada, Yasutomo J. Uemura, Tatsuo Goko, Adam A. Aczel, Travis J. Williams, Graeme M. Luke, Yasuo Narumi, Koichi Kindo, Masakazu Nishi …

CHEMISTRY OF MATERIALS 22(16) 4625-4631 2010年8月査読有り
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 183(7) 1496-1503 2010年7月査読有り
Neutron diffraction studies on the multiferroic conical magnet Ba2Mg2Fe12O22

Shintaro Ishiwata, Daisuke Okuyama, Kazuhisa Kakurai, Masakazu Nishi, Yasujiro Taguchi, Yoshinori Tokura

PHYSICAL REVIEW B 81(17) 174418 2010年5月査読有り
Synthesis, Structural and Magnetic Properties of the Solid Solution (CuCl1-xBrx)LaNb2O7 (0 ≤x ≤1)

Yoshihiro Tsujimoto, Atsushi Kitada, Hiroshi Kageyama, Masakazu Nishi, Yasuo Narumi, Koichi Kindo, Yoko Kiuchi, Yutaka Ueda, Yasutomo J. Uemura, Yoshitami Ajiro …

Journal of the Physical Society of Japan 79(1) 014709-1-014709-4 2010年1月
Quantum phase transition in (CuCl)La(Nb1-xTax)(2)O-7

A. Kitada, Y. Tsujimoto, H. Kageyama, Y. Ajiro, M. Nishi, Y. Narumi, K. Kindo, M. Ichihara, Y. Ueda, Y. J. Uemura …

PHYSICAL REVIEW B 80(17) 174409 2009年11月査読有り
Lattice dynamics of cubic NaNbO3: An inelastic neutron scattering study

Izumi Tomeno, Yorihiko Tsunoda, Kunihiko Oka, Masato Matsuura, Masakazu Nishi

Physical Review B - Condensed Matter and Materials Physics 80(10) 104101 2009年9月4日査読有り

MISC

141

Magnetocrystalline anisotropy and crystal fields in the weak-ferromagnet Ce <inf>4</inf>Ni <inf>3</inf>Pb <inf>4</inf>

Keisuke Shigetoh, Takahiro Onimaru, Akihiro Ishida, Motoko Akita, Katsuya Inoue, Masakazu Nishi, Taku J. Sato, Devashibhai T. Adroja, Toshiro Takabatake

Journal of the Physical Society of Japan 78(2) 024701 2009年2月
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 …

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 131(1) 221-229 2009年1月
Synthesis, structure, and magnetic properties of the two-dimensional quantum antiferromagnets (CuBr) A2 B3 O10 (A=Ca, Sr, Ba, Pb; B=Nb, Ta) with the 1/3 magnetization plateau

Y. Tsujimoto, H. Kageyama, Y. Baba, A. Kitada, T. Yamamoto, Y. Narumi, K. Kindo, M. Nishi, J. P. Carlo, A. A. Aczel …

Physical Review B - Condensed Matter and Materials Physics 78(21) 214410 2008年12月1日
極低温用小型キュービックアンビル圧力発生装置の開発

上床美也, 松林和幸, 松本武彦, 阿曽尚文, 西正和, 藤原哲也, 辺土正人, 田幡諭史, 高木克啓, 田渡正史 …

高圧力の科学と技術 18(3) 230-236 2008年
Effect of uniaxial stress cooling on the neutron magnetic scattering in a ZnCr2O4 single crystal

Eiji Kita, Ayumu Hatanaka, Hideto Yanagihara, Kenji Nakajima, Isao Kagomiya, Masakazu Nishi, Kazuhisa Kakurai, Kilti Siratori, Kay Kohn

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 68(11) 2166-2169 2007年11月
Magnetic soliton lattice in CuB2O4 under an applied magnetic field

Y. Kousaka, S. Yano, M. Nishi, K. Hirota, J. Akimitsu

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 68(11) 2170-2173 2007年11月
On the magnetic symmetry of the low temperature phase of ZnCr2O4

Isao Kagomiya, Yoshiaki Hata, Daisuke Eto, Hideto Yanagihara, Eiji Kita, Kenji Nakajima, Kazuhisa Kakurai, Masakazu Nishi, Kenji Ohoyama

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 76(6) 064710 2007年6月
Pressure effect on magnetic short range ordering of LuFe2Ge2

Tetsuya Fujiwara, Naofumi Aso, Hideaki Yamamoto, Masato Hedo, Yuta Saiga, Masakazu Nishi, Yoshiya Uwatoko, Kazuma Hirota

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 76 60-61 2007年1月
Magnetic excitation of TmTe in the anomalous metallic state under high pressure

T. Matsumura, H. Ishida, M. Nishi

PHYSICA B-CONDENSED MATTER 385 356-358 2006年11月
Neutron diffraction study of magnetic transitions in PrCu2Ge2

Toru Shigeoka, Masakazu Nishi, Shinji Kawano, Yoshiya Uwatoko

PHYSICA B-CONDENSED MATTER 385 323-325 2006年11月
Magnetic structure of Y1-xNdxMn6Sn6 alloys

T. Hori, H. Shiraishi, K. Ohoyama, M. Nishi, K. Koyama, K. Watanabe

PHYSICA B-CONDENSED MATTER 385(1) 320-322 2006年11月
Collinear order in frustrated quantum antiferromagnet on square lattice (CuBr)LaNb2O7

Noriaki Oba, Hiroshi Kageyama, Taro Kitano, Jun Yasudai, Yoichi Baba, Masakazu Nishi, Kazuma Hirota, Yasuo Narumi, Masayuki Hagiwara, Koichi Kindo …

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75(11) 113601-1~5 2006年11月
Magnetic form factor of URu2Si2

K Kuwahara, M Kohgi, K Iwasa, M Nishi, K Nakajima, M Yokoyama, H Amitsuka

PHYSICA B-CONDENSED MATTER 378-80(1) 581-582 2006年5月
正方格子上のスピンで実現したスピン液体状態 -イオン交換を用いた物質開発 -

陰山洋, 北野太郎, 大場紀章, 網代芳民, 吉村一良, 西正和, 廣田和馬, 鳴海康雄, 萩原政幸, 金道浩一

固体物理 41(2) 55-64 2006年
Thermal neutron spin-echo studies on dynamics of a glass-forming polymer in a high Q range

T Kanaya, K Kakura, Tsukushi, I, R Inoue, H Watanabe, M Nishi, K Nakajima, K Takemura, H Furuya

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 74(12) 3236-3240 2005年12月
High energy-resolution inelastic neutron scattering experiments on triplet bound state excitations in SrCu2(BO3)(2)

N Aso, H Kageyama, K Nukui, M Nishi, H Kadowaki, Y Ueda, K Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 74(8) 2189-2192 2005年8月
Spin-singlet ground state in two-dimensional S=1/2 frustrated square lattice: (CuCl)LaNb2O7

H Kageyama, T Kitano, N Oba, M Nishi, S Nagai, K Hirota, L Viciu, JB Wiley, J Yasuda, Y Baba …

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 74(6) 1702-1705 2005年6月
Neutron Diffraction Study on the Antiferromagnetic Insulating Ground State of β-Na0.33V2O5

Satoshi Nagai, Masakazu Nishi, Kazuhisa Kakurai, Yasuaki Oohara, Hideki Yoshizawa, Hiroyuki Kimura, Yukio Noda, Beatrice Grenier, Touru Yamauchi, Jun-ichi Yamaura …

Journal of the Physical Society of Japan 74(4) 1297-1308 2005年4月
Neutron scattering studies of order parameters and excitations in antiferro-quadrupolar phase of PrFe4P12

L Hao, K Iwasa, K Kuwahara, M Kohgi, H Sugawara, Y Aoki, H Sato, TD Matsuda, JM Mignot, A Gukasov …

PHYSICA B-CONDENSED MATTER 359(30) 871-873 2005年4月
S=1/2 square-lattice antiferromagnets: (CuX)LaB2O7 and (CuCl)A(2)B(3)O(10) (X = Cl, Br; A = Ca, Sr; B = Nb, Ta)

H Kageyama, T Kitano, R Nakanishi, J Yasuda, N Oba, Y Baba, M Nishi, Y Ueda, Y Ajiro, K Yoshimura

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT S159(159) 39-47 2005年

もっとみる

書籍等出版物

高圧技術ハンドブック

丸善株式会社 2007年 (ISBN: 9784621078280)
Quantum Properties of Low-Dimensional Antiferromagnets

Kyushu University Press; ed. by Y. Ajiro and J.-P. Boucher 2002年 (ISBN: 4873787408)
Physics and Chemistry of Transition-Metal Oxides

Springer Series in Solid-State Sciences, vol. 125 (Edit. by H. Fukuyama and N. Nagaosa); ISBN=354065187X 1999年

講演・口頭発表等

Phonon anomaly in the inorganic spin-Peierls compound CuGeO3

西正和

23rd International Conference on Low Temperature Physics 2002年8月
Inelastic Neutron Scattering of NaV2O5 under High Pressure

西正和

ISSP International Symposium of “Correlated Electrons” (ISSP8) 2001年10月
Lattice dynamics of the spin-Peierls inorganic compound CuGeO3

西正和

International Conference on Neutron Scattering 2001年9月
Phonon Anomaly in the Spin-Peierls System CuGeO3

西正和

IMR Workshop on the Study of new Quantum states of Orbital and the Analysis of the Dynamical Structure of new Electronic Freedom 2001年5月
Neutron Scattering Study of the Lattice Dynamics in CuGeO3

西正和

March Meeting of American Physical Society 2001年3月
Polarized Neutron Scattering Studies at JRR-3M

西正和

International Symposium on Advanced Utilization of Research Reactors ---- Neutron Sources and Neutron Beam Devices ---- (ISAURR2001) 2001年2月招待有り
The Uniaxial Pressure Dependence of Spin-Peierls Transition Temperature in CuGeO3

西正和

1st International Symposium on Advanced Science Research (ASR-2000) 2000年10月
Lattice Dynamics in CuGeO3 by Inelastic Neutron Scattering

西正和

Proceedings of CREST International Workshop on Pseudo Gap, Spin Gap and Anomalous 2000年1月
New Aspects of the b*-LA Phonon of CuGeO3

西正和

March Meeting of American Physical Society 1999年3月
New aspects of the b*-LA phonon of CuGeO3

西正和

7th International Conference of ISSP 1998年11月
Pressure Effect to Spin-Peierls Transition in Inorganic Compounds CuGeO3 and NaV2O5

西正和

Synchrotron, Neutron and Laboratory Source Crystallography at High Pressure Conference (IUCr-HP) 1998年11月招待有り
Magnetic Excitations of CuGeO3 under Applied Pressure

西正和

International Conference on Neutron Scattering 1997年8月
Inelastic Neutron Scattering Experiment on CuGeO3 under High Pressure

西正和

US-Japan Neutron Scattering Workshop 1995年3月
Magnetic Excitations in CuGeO3

西正和

International Conference on Neutron Scatterings 1994年10月
Polarized Neutron Scattering Studies at JRR-3M

西正和

Fifth International Symposium on Advanced Nuclear Energy Research 1993年11月
New Polarization Analysis Neutron Scattering Instrument at JRR-3M

西正和

Neutron Scattering Satellite Meeting in association with 16th IUCr Congress 1992年8月
Neutron Scattering Study of NaN3

西正和

The Sixth Int. Meeting on Ferroelectricity 1985年8月
Neutron Diffraction Studies of NaN3

西正和

Int. Symposium on Neutron Scattering 1984年8月

担当経験のある科目(授業)

所属学協会

共同研究・競争的資金等の研究課題

産業財産権

特開平01-253696 熱中性子遮蔽材

原田惠文, 奥田久志, 伊藤雄而, 西正和, 古内明夫