Koyama Keiichi

コヤマケイイチ | Koyama Keiichi

Affiliation and department：
Job title： Associate Professor
Homepage URL (2)： http://www-lab.imr.tohoku.ac.jp/~kkoyama/index-E.html , http://www-lab.imr.tohoku.ac.jp/~kkoyama/index.html

Research field (4)： Crystal engineering , Applied materials , Electronic devices and equipment , Magnetism, superconductivity, and strongly correlated systems

Research keywords (11)：高圧 , 低温 , 物性 , 材料 , 磁性 , 強磁場 , high pressure , low temperature , materials , magnetism , high magnetic field

Research theme for competitive and other funds (4)：

2001 - 次世代高機能性磁性材料の強磁場物性
1998 - 強磁場発生および関連実験技術開発
1998 - 強相関電子系および遍歴電子磁性体の強磁場・極低温・高圧下物性
1998 - 強磁場・極低温下電子スピン共鳴とサイクロトロン共鳴

MISC (280)：

R. Y. Umetsu, W. Ito, K. Ito, K. Koyama, A. Fujita, K. Oikawa, T. Kanomata, R. Kainuma, K. Ishida. Anomaly in entropy change between parent and martensite phases in the Ni50Mn34In16 Heusler alloy. SCRIPTA MATERIALIA. 2009. 60. 1. 25-28
Hironari Okada, Keiichi Koyama, Masashi Nakatake, Kenya Shimada, Hirofumi Namatame, Masaki Taniguchi, Kazuo Watanabe. Photoemission Spectroscopy of Spinel-Type CuV2S4 Single Crystal. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN. 2008. 77. 11. 114711
E. G. Gerasimov, N. V. Mushnikov, K. Koyama, T. Kanomata, K. Watanabe. Positive magnetoresistance and large magnetostriction at first-order antiferro-ferromagnetic phase transitions in RMn(2)Si(2) compounds. JOURNAL OF PHYSICS-CONDENSED MATTER. 2008. 20. 44. 445219
T. Fujita, H. Okada, K. Koyama, K. Watanabe, S. Maekawa, M. W. Chen. Unusually Small Electrical Resistance of Three-Dimensional Nanoporous Gold in External Magnetic Fields. PHYSICAL REVIEW LETTERS. 2008. 101. 16. 166601
Y. Yamato, M. Matsukawa, T. Kumagai, R. Suryanarayanan, S. Nimori, M. Apostu, A. Revcolevschi, K. Koyama, N. Kobayashi. Effect of pressure on the steplike magnetostriction of single crystalline bilayered manganite (La(0.4)Pr(0.6))(1.2)Sr(1.8)Mn(2)O(7). PHYSICAL REVIEW B. 2008. 78. 13. 132411

ｍore...

Works (1)：

電磁アクチュエータ用軟磁性材料棒における磁気的異方性材の開発
2008 - 2009

Education (6)：

- 1997 Hiroshima University
- 1997 Hiroshima University Graduate School, Division of Biophere Sciences
- 1994 Ehime University
- 1994 Ehime University Graduate School, Division of Natural Science
- 1992 Ehime University Faculty of Science

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Professional career (1)：

博士(学術) (広島大学)

Work history (6)：

1998 - 2001 東北大学金属材料研究所磁気物理学部門
1998 - 2001 Research Associate, Institute for Materials Research, Tohoku University
2001 - - 東北大学金属材料研究所附属強磁場超伝導材料研究センター
2001 - - High Field Laboratory for Superconducting Materials, Institute for Materials research, Tohoku University
1997 - 1998 The University of Tokyo The Institute for Solid State Physics

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Awards (2)：

2003 - 金属研究助成会原田研究奨励賞
1998 - 日本応用磁気学会学術奨励賞

Association Membership(s) (8)：

強磁場フォーラム事務局委員 , 日本金属学会会報まてりあ編集委員 , 日本物理学会・領域3(磁性、磁気共鳴分野)世話人 , 日本金属学会・欧文誌編集委員 , 日本磁気科学会 , 日本金属学会 , 日本応用磁気学会 , 日本物理学会

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