Developments and applications of a Kelvin double bridge techniquefor small deviations of magnetoresistance in pulsed magnetic field

2008 Fiscal Year Final Research Report

• Project/Area Number: 18540339
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: MITAMURA Hiroyuki The University of Tokyo, 物性研究所, 助教 (60282604)
• Project Period (FY): 2006 – 2008
• Keywords: 強相関電子系 / 金属物性 / 磁性 / 低温物性 / 物性実験

Research Abstract

磁気抵抗効果からはその物質の電子状態の重要な知見が得られるが、一般に金属磁性体では抵抗とその変化が小さい事からパルス強磁場中での計測は技術的に困難とされ、是迄測定実績は殆ど無かった。本研究ではケルビンダブルブリッジ法という特殊な方法を用いた測定システムの開発を行なった。是に由り非常に高い磁場領域で金属磁性体の抵抗が簡便に精度良く測定出来る様になり、今後この分野の進展に大きく寄与すると期待される。

Research Products

• [Journal Article] Sign Reversal of the DielectricPolarization of MnWO_4 in Very High MagneticFields (2009)
  • Author(s): H. Mitamura, H. Nakamura, T. Kimura, T. Sakakibara and K. Kindo
  • Journal Title: Journal of Physics : Conference Series 150 Pages: 042126
  • Peer Reviewed
• [Journal Article] Magnetization and specific heatmeasurement of the Shastry-Sutherlandlattice compounds : Ln_2BaPdO_5 (Ln=La, Pr,Nd, Sm, Eu, Gd, Dy, Ho) (2008)
  • Author(s): T.C. Ozawa, T. Taniguchi, Y. Kawaji, S.Mizusaki, Y. Nagata, Y. Noro, H. Samata, H.Mitamura, S. Takayanagi
  • Journal Title: JOURNAL OF ALLOYS AND COMPOUNDS 448 Issue 1-2 Pages: 96-103
  • Peer Reviewed
• [Journal Article] Dielectric Polarization Measurements onthe Antiferromagnetic Triangular LatticeSystem CuFeO_2 in Pulsed High Magnetic Fields (2007)
  • Author(s): H. MITAMURA, S. MITSUDA, S. KANETSUKI, H.A. KATORI, T. SAKAKIBARA, and K. KINDO
  • Journal Title: Journal of the Physical Society of Japan Vol.76, No.9 Pages: 094709
  • Peer Reviewed
• [Journal Article] Phase Transitions of a GeometricallyFrustrated Spin System CdCr_2O_4 in Very HighMagnetic Fields (2007)
  • Author(s): Hiroyuki MITAMURA, Hiroaki UEDA, Hiroko Aruga KATORI, Shojiro TAKEYAMA, Toshiro SAKAKIBARA, Yutaka UEDA, and Hidenori TAKAGI
  • Journal Title: Journal of the Physical Society of Japan Vol.76, No.8 Pages: 085001
  • Peer Reviewed
• [Journal Article] Pyroelectric measurements on ageometrically frustrated spin system CuFeO_2 in pulsed high magnetic fields (2006)
  • Author(s): H. Mitamura, S. Mitsuda, S. Kanetsuki, H. A. Katori, T. Sakakibara, K. Kindo
  • Journal Title: Journal of Physics : Conference Series 51 Pages: 557-560
  • Peer Reviewed
• [Journal Article] Double Antiferromagnetism in Heusler-Type Alloys Fe_<2+x>V_<1-x>Si (2006)
  • Author(s): H. Matsuda, K. Endo, M. Tokiyama, H. Shinmen, Y. Takano, S. Masubuchi, K. Ooiwa, H. Mitamura, J. Arai, T. Goto
  • Journal Title: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75(9) Pages: 094714
  • Peer Reviewed
• [Journal Article] Physical properties and phase diagramof geometrically quadrupolar frustratedsystem DyB_4 (2006)
  • Author(s): R. Watanuki, H. Mitamura, T. Sakakibara, G. Sato, K. Suzuki
  • Journal Title: PHYSICA B-CONDENSED MATTER 378-80 Pages: 594-595
  • Peer Reviewed
• [Journal Article] Singlet ground state and magneticinteractions in new spin dimer systemBa_3Cr_2O_8 (2006)
  • Author(s): T. Nakajima, H. Mitamura, Y. Ueda
  • Journal Title: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 75(5)No.054706
  • Peer Reviewed
• [Presentation] MnWO_4のパルス強磁場中誘電分極測定 (2008)
  • Author(s): 三田村裕幸, 中村浩之, 木村剛, 榊原俊郎, 金道浩一
  • Organizer: 第5回強磁場スピン科学シンポジウム
  • Place of Presentation: 岡山大学(岡山県岡山市)
  • Year and Date: 20081212-13
• [Presentation] MnWO_4のパルス強磁場中誘電分極測定 (2008)
  • Author(s): 三田村裕幸, 中村浩之, 木村剛, 榊原俊郎, 金道浩一
  • Organizer: 6特定領域合同研究
  • Place of Presentation: 東京大学本郷キャンパス(東京都文京区)
  • Year and Date: 20081129-1201
• [Presentation] MnWO_4のパルス磁場中誘電分極測定 (2008)
  • Author(s): 三田村裕幸, 中村浩之, 木村剛, 榊原俊郎, 金道浩一
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学(岩手県盛岡市)
  • Year and Date: 20080920-23
• [Presentation] Ce_3Pd_<20>Si_6の極低温磁化 (2008)
  • Author(s): 三田村裕幸, 桜庭孝明, 田山孝, 榊原俊郎, 都竹星志, 阿野元貴, 石井勲, 赤津光洋, 根本祐一, 後藤輝孝, 北澤英明
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学(岩手県盛岡市)
  • Year and Date: 20080920-23
• [Presentation] Sign Reversal of the DielectricPolarization of MnWO_4 in Very HighMagnetic Fields (2008)
  • Author(s): H. Mitamura, H. Nakamura, T. Kimura, T. Sakakibara, K. Kindo
  • Organizer: 25th International Conference on LowTemperature Physics(LT25)
  • Place of Presentation: at Amsterdam(Netherland)
  • Year and Date: 20080806-13
• [Presentation] MnWO_4のパルス強磁場中分極測定 (2008)
  • Author(s): 三田村裕幸
  • Organizer: 特定領域(473)「フラストレーションが創る新しい物性」第2回トピカルミーティング「フラストレーションとマルチフェロイクス」
  • Place of Presentation: 京都大学宇治キャンパス(京都府宇治市)
  • Year and Date: 20080605-06
• [Presentation] 三角格子反強磁性体CuFeO_2のパルス強磁場中誘電分極測定 (2006)
  • Author(s): 三田村裕幸, 満田節生, 金築俊介, 香取浩子, 榊原俊郎, 金道浩一
  • Organizer: 第3回強磁場スピン科学シンポジウム
  • Place of Presentation: 東京大学物性研究所(千葉県柏市)
  • Year and Date: 20061208-09
• [Presentation] Pyroelectric measurements on ageometrically frustrated spin systemCuFeO_2 in pulsed high magnetic fields (2006)
  • Author(s): H. Mitamura, S. Mitsuda, S. Kanetsuki, H.A. Katori, T. Sakakibara, K. Kindo
  • Organizer: International Conference on Research in High Magnetic Fields 2006(RHMF2006)
  • Place of Presentation: at Sendai(Japan)
  • Year and Date: 20060816-19
• [Presentation] MnWO_4のパルス磁場中誘電分極測定 (2006)
  • Author(s): 三田村裕幸, 中村浩之, 木村剛, 榊原俊郎, 金道浩一
  • Organizer: 日本物理学会第63回年会
  • Place of Presentation: 近畿大学(大阪府東大阪市)
  • Year and Date: 20060322-26