Study of field-induced structural phase transitions of quantum magnets by a optical fiber dilatometer

• Project/Area Number: 18740196
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Tohoku University (2008); The University of Tokyo (2006-2007)
• Principal Investigator: NARUMI Yasuo Tohoku University, 金属材料研究所, 准教授 (50360615)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,680,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥180,000); Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2007: ¥500,000 (Direct Cost: ¥500,000); Fiscal Year 2006: ¥2,400,000 (Direct Cost: ¥2,400,000)
• Keywords: 強磁場 / 構造相転移 / 磁歪 / 光ファイバ / X線 / レーザー変位計 / 放射光 / 歪みゲージ / 歪みケージ / 光ファイバー

Research Abstract

磁場によって誘起される量子磁性体の構造変化を非接触かつ高感度で検出するために、光ファイバ変位計を用いた磁場中歪み測定装置を開発した。これに加えて、歪みゲージ法や放射光X線回折の手法を組み合わせて、マルチフェロ物質として知らせるCuFeO2や2次元反強磁性体SrCu2(BO3)2など、様々な磁性体に関する磁場中の格子定数を詳細に測定し、磁気相互作用と格子定数の磁場依存性に関して、その相関関係を明らかにした。

Research Products

• [Journal Article] Field Induced Lattice Deformation in the Quantum Antiferromagnet SrCu_2(BO_3)_2 (2009)
  • Author(s): Yasuo NARUMI、 Noriki TERADA、Yoshikazu TANAKA, 他計11名
  • Journal Title: Journal of the Physical Society of Japan 78、043702
  • NAID: 10025959073
  • Peer Reviewed
• [Journal Article] Field Induced Lattice Deformation in the Quantum Antiferromagnet SrCu_2(B0_3)_2 (2009)
  • Author(s): Yasuo Narumi, et.al.
  • Journal Title: Journal of the Physical Society of Japan 78 Pages: 43702-43702
  • Peer Reviewed
• [Journal Article] Magnetization process and the associated lattice deformations in an intermetallic compound Gd_5Ge_3 (2008)
  • Author(s): Yasuo Narumi、Yoshikazu Tanaka、Noriki Terada, 他計13名
  • Journal Title: Journal of the Physical Society of Japan 77、053711
  • NAID: 110006665988
  • Peer Reviewed
• [Journal Article] Magnetization process and the associated lattice deformations in an intermetallic compound Gd_5Ge_3 (2008)
  • Author(s): Yasuo Narumi, et.al.
  • Journal Title: Journal of the Physical Society of Japan 77 Pages: 53711-53711
  • NAID: 110006665988
  • Peer Reviewed
• [Journal Article] Lattice [graph] Deformations Induced by an Applied Magnetic Field in the Frustrated Antiferromagnet HgCr_2O_4 (2007)
  • Author(s): Yoshikazu Tanaka、Yasuo Narumi、Noriki Terada, 他計16名
  • Journal Title: Journal of the Physical Society of Japan 77、76、043708
  • Peer Reviewed
• [Journal Article] Correlation between crystal structure and magnetism in the frustrated antiferromagnet CuFeO_2 under high magnetic fields (2007)
  • Author(s): N. Terada、Y. Narumi、Y. Sawai, 他計15名
  • Journal Title: Physical R 75、 Pages: 224411-224411
  • Peer Reviewed
• [Journal Article] Metamagnetic Transition to Poor Conductor in BaVS_3 (2007)
  • Author(s): Yasuo Narumi、Ken-ichi Suga、Koichi Kindo, 他計6名
  • Journal Title: Journal of the Physical Society 76、013706
  • NAID: 110006151539
  • Peer Reviewed
• [Journal Article] Lattice Deformations Induced by an Applied Magnetic Field in the Frustrated Antiferomagnet HgCr_2O_4 (2007)
  • Author(s): Y. Tanaka, et. al.
  • Journal Title: Journal of Physical Society of Japan 76 Pages: 43708-43708
  • Peer Reviewed
• [Journal Article] Correlation between crystal structure and magnetism in the frustrated Antieferromagnet CuFeO_2 under high magnetic field (2007)
  • Author(s): N. Terada, et. al.
  • Journal Title: Physical Review B 75 Pages: 224411-224411
  • Peer Reviewed
• [Journal Article] Metamagnetic Transition to Poor Conductor in BaVS_3 (2007)
  • Author(s): Yasuo Narumi et al.
  • Journal Title: Journal of Physical Society of Japan 76 Pages: 13706-13706
  • NAID: 110006151539
• [Journal Article] Field-inducedlattice staircase in a furustrated antiferromagnet CuFeO_2 (2006)
  • Author(s): N. Terada、Y. Narumi、K. Katsumata, 他計14名
  • Journal Title: Physical Revie B 74、188040R
  • Peer Reviewed
• [Journal Article] X-ray diffraction studies in pulsed high magnetic fields (2006)
  • Author(s): Y. Narumi、K. Kindo、K. Katsumata, 計13名
  • Journal Title: Journal of Physics Confere Series 54、494
  • Peer Reviewed
• [Journal Article] Field-induced lattice staircase in a furustrated antiferromagnet CuFeO_2 (2006)
  • Author(s): N.Terada et al.
  • Journal Title: Physical Review B 74
• [Journal Article] X-ray diffraction studies in pulsed high magnetic fields (2006)
  • Author(s): Y.Narumi et al.
  • Journal Title: Journal of Physics Conference Series 51 Pages: 494-494
• [Presentation] SrCu_2(BO_3)_2の強磁場磁性と格子変形II (2009)
  • Author(s): 鳴海康雄, 他10名
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-29
• [Presentation] Field induced lattice deformation of quantum magnets studied by high-field x-ray diffraction (2009)
  • Author(s): Y. Narumi, et.al.
  • Organizer: 4th JAEA Synchrotron Radiation Research Symposium X-Ray and High Magnetic Field
  • Place of Presentation: SPring-8
  • Year and Date: 2009-03-05
• [Presentation] SrCu_2(BO_3)_2の強磁場磁性と格子変形 (2008)
  • Author(s): 鳴海康雄, 他11名
  • Organizer: 日本物理学大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] SrCu_2(BO_3)_2の強磁揚磁性と格子変形 (2008)
  • Author(s): 鳴海康雄, 他
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] 光ファイバ変位計を用いた強磁場磁歪測定装置の開発 (2008)
  • Author(s): 鳴海康雄、金道浩一
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23