Real time observation of magnetic ordering process by means of time resolved neutron scattering technique

• Project/Area Number: 21540346
• 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: Tokyo University of Science
• Principal Investigator: MOTOYA Kiyoichiro 東京理科大学, 理工学部, 教授 (60114683)
• Co-Investigator(Renkei-kenkyūsha): MOYOSHI Taketo 東京理科大学, 理工学部, 助教 (50444394)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 長時間変化 / 中性子散乱 / 時間分割測定 / 磁気秩序 / スローダイナミックス / 実時間測定

Research Abstract

In a system without randomness or imperfections we have not expected to observe a time variation of magnetic property within an attainable time scale. Contrary to all expectations, we found a long-time variation of magnetic structure in a non-diluted uniform magnet CeIr3Si2 by means of time-resolved neutron scattering measurements. We examined other materials and found similar long-time variations of magnetic structure in several materials. In this study we have clarified that the peculiar long-time variation of magnetic structure in these materials is an intrinsic property caused by frustrated magnetic interactions.

Research Products

• [Journal Article] Long-time variation of magnetic structure in multistep metamagnets Ca_3(Co-M)_2O_6 (2012)
  • Author(s): T. Moyoshi and K. Motoya
  • Journal Title: J. Phys. Conference Series Volume: (印刷中)
• [Journal Article] Magnetic Structure and Its Long-time Variation in a Multi-Step Metamagnet CeIr_3Si_2 (2012)
  • Author(s): T. Moyoshi, K. Motoya, Y. MT. Takabatake
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81
• [Journal Article] Incommensurate Magnetic Stucture and Its Long-Time Variation in a Geometrically Frustrated Magnet Ca_3Co_2O_6 (2011)
  • Author(s): T. Moyoshi and K. Motoya
  • Journal Title: J. Phys. Soc. Jpn Volume: 80
• [Journal Article] Long-time variation of magnetic stucture in a geometrically frustrated magnet Ca_3Co_2O_6 (2011)
  • Author(s): T. Moyoshi, R. Takahashi and K. Motoya
  • Journal Title: J. Phys. Conference Series Volume: 273
• [Journal Article] Long-time variation of magnetic structure in rare-earth intermetallic compounds (2011)
  • Author(s): K. Motoya, T. Moyoshi and T. Shigeoka
  • Journal Title: J. Phys. Conference Series Volume: 273
• [Journal Article] Magnetic structure and its long-time variation in the multistep metamagnet CeIr_3Si_2 (2011)
  • Author(s): T.Moyoshi
  • Journal Title: J.Phys.Soc.Jpn. Volume: 81 Issue: 1 Pages: 014704-014704
  • DOI: 10.1143/jpsj.81.014704
  • Peer Reviewed
• [Journal Article] Incommensurate Magnetic Structure and Its Long-Time Variation in a Geometrically Frustrated Magnet Ca3Co2O6 (2011)
  • Author(s): T.Moyoshi, K.Motoya
  • Journal Title: J.Phys.Soc.Jpn. Volume: 80
  • NAID: 40018753724
  • Peer Reviewed
• [Journal Article] Long-time variation of magnetic structure in rare-earth intermetallic compounds (2011)
  • Author(s): K.Motoya, T.Moyoshi, T.Shigeoka
  • Journal Title: J.Phys.Conference Series Volume: 273
  • Peer Reviewed
• [Journal Article] Real-time observation of magnetic structural change in the multistep metamagnet in CeIr_3Si_2 (2010)
  • Author(s): K. Motoya, and T. Takabatake
  • Journal Title: J. Phys. Conference Series Volume: 251
• [Journal Article] Long-time variation of magnetic structure in in CeIr_3Si_2 (2010)
  • Author(s): K Motoya, Y. Muro and T. Takabatake
  • Journal Title: J. Phys. Conference Series Volume: 200
• [Journal Article] Real-time observation of magnetic structural change in the multistep metamagnet CeIr3Si2 (2010)
  • Author(s): K.Motoya, Y.Muro, T.Takabatake
  • Journal Title: J.Phys.Conference Series Volume: 251
  • Peer Reviewed
• [Journal Article] Long-time variation of magnetic structure in CeIr3Si2 (2010)
  • Author(s): K.Motoya, et al.
  • Journal Title: J.Phys.Conference Series 100
  • Peer Reviewed
• [Journal Article] Semiconducting behaviour in CeT_2Al_<10>(T=Fe and Ru) (2010)
  • Author(s): Y.Muro, et al.
  • Journal Title: J.Phys.Conference Series 100
  • Peer Reviewed
• [Journal Article] Magnetic Field Dependence of Magnetic Clusters in the Random Magnet Fe_<65>(Ni_<0.78>Mn_<0.22>)_<35> (2009)
  • Author(s): K.Motoya, et al.
  • Journal Title: J.Phys.Soc.Jpn. 78
  • NAID: 10025960523
  • Peer Reviewed
• [Presentation] Effect of disorder on the long-time variation of magnetic structure in rare-earth compounds (2011)
  • Author(s): K. Motoya, T. Moyoshi, M. Asano, S. Takagiand T. Shigeoka
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Cambridge, England
  • Year and Date: 2011-08-31
• [Presentation] Long-time variation of magnetic structure in multistep metamagnets Ca3(Co-M) 2O6 (2011)
  • Author(s): T. Moyoshi and K. Motoya
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Cambridge, England
  • Year and Date: 2011-08-31
• [Presentation] Long-time variation of magnetic structure in multistep metamagnets Ca3(Co-M)206 (2011)
  • Author(s): T.Moyoshi, K.Motoya
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Cambridge, England
  • Year and Date: 2011-08-31
• [Presentation] Long-time variation of magnetic structure in rare-earth intermetalliccompounds (2010)
  • Author(s): K. Motoya, T. Moyoshi and T. Shigeoka
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Santa Fe, U. S. A
  • Year and Date: 2010-06-28
• [Presentation] Long-time variation of magnetic structure in rare-earth intermetallic compounds (2010)
  • Author(s): K.Motoya, T.Moyoshi, T.Shigeoka
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Santa Fe, U.S.A.
  • Year and Date: 2010-06-28
• [Presentation] Long-time variation of magnetic structure in CeIr3Si2 (2009)
  • Author(s): K. Motoya, et al.
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 2009-07-30
• [Presentation] Long-time variation of magnetic structure in CeIr3Si2 (2009)
  • Author(s): K.Motoya, et al.
  • Organizer: International Conference on Magnetism
  • Place of Presentation: Karlsruhe, Germany
  • Year and Date: 2009-07-30
• [Presentation] Real-time Observation of Magnetic Structural Change in the Multistep Metamagnet CeIr3Si2 (2009)
  • Author(s): K. Motoya, et al.
  • Organizer: International conference Neutron Scattering
  • Place of Presentation: Knoxville, U. S. A
  • Year and Date: 2009-05-04