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Real time observation of magnetic phase transitions by means of time resolved neutron scattering technique

Research Project

Project/Area Number 24540351
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionTokyo 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) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords磁気構造 / 磁気相転移 / 長時間変化 / 中性子散乱 / 時間分割測定 / フラストレーション / 中性子散乱測定 / 磁化測定 / パルス中性子
Outline of Final Research Achievements

In a system without randomness or imperfections we had not directly observed time variations of magnetic structure. In the previous study, we found long-time variations of magnetic structure in some non-diluted uniform magnets by means of time-resolved neutron scattering measurements.
In this study we clarified that these long-time variations are the intrinsic property and not caused by inevitable randomness in samples. Based on the precise observations of time variation of neutron scattering patterns, we determined that the magnetic phase transition in CeIr3Si2 proceeds with a nucleation-and-growth process. The phase transitions in the mixed system Ce(Ir-Rh)3Si2 showed the coexistence of two (normal and slow) components. The weight ratio of these two components varies according with the concentration. We expect that these findings will contribute to find the origin of the anomalous long-time variation of magnetic structure observed in particular materials.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (18 results)

All 2016 2015 2014 2013 2012 2011 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Acknowledgement Compliant: 2 results) Presentation (12 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] Long-Time Variation in Magnetic Structure of CeIr3Si2:Observation of a Nucleation-and-Growth Process of Magnetic Domains2016

    • Author(s)
      K. Motoya, M. Hagihala, T. Takabatake and M. Matsuda
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 85 Issue: 3 Pages: 034722-18

    • DOI

      10.7566/jpsj.85.034722

    • NAID

      210000133881

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Long-Time Variation in Magnetic Structure of Ce0.98La0.02Ir3Si2 : Effect of Randomness on Time Variation2014

    • Author(s)
      K. Motoya, T. Moyoshi and M. Matsuda
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 83 Issue: 2 Pages: 024708-024708

    • DOI

      10.7566/jpsj.83.024708

    • NAID

      210000132965

    • Related Report
      2014 Research-status Report 2013 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 磁気構造変化の実時間追跡2014

    • Author(s)
      元屋 清一郎
    • Journal Title

      日本物理学会誌

      Volume: 69 Pages: 628-633

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Long-time variation of magnetic structure in multistep metamagnets Ca3(Co-M)2O62012

    • Author(s)
      T. Moyoshi and K. Motoya
    • Journal Title

      J. Phys. : Conference Series

      Volume: 391 Pages: 012100-012100

    • DOI

      10.1088/1742-6596/391/1/012100

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetic structure and its long-time variation in the multistep metamagnet CeIr_3Si_22011

    • Author(s)
      T.Moyoshi
    • Journal Title

      J.Phys.Soc.Jpn.

      Volume: 81 Issue: 1 Pages: 014704-014704

    • DOI

      10.1143/jpsj.81.014704

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Necessary conditions for the long-time variation of magnetic structure in frustrated magnets2015

    • Author(s)
      K. Motoya, M. Hagihala and M Matsuda
    • Organizer
      20th International Conference on Magnetism
    • Place of Presentation
      バルセロナ市 (スペイン)
    • Year and Date
      2015-07-05
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mechanism of the long-time variation of magnetic structure in CeIr3Si22014

    • Author(s)
      K. Motoya, M. Hagihala and M. Matsuda
    • Organizer
      The International Conference on Strongly Correlated Electron Systems
    • Place of Presentation
      Grenoble, France
    • Year and Date
      2014-07-07 – 2014-07-11
    • Related Report
      2014 Research-status Report
  • [Presentation] Time-Resolved Neutron Scattering Study of Magnetic Structural Change in Frustrated Magnets2014

    • Author(s)
      K. Motoya, M. Hagihala and M. Matsuda
    • Organizer
      American Conference on Neutron Scattering
    • Place of Presentation
      Knoxville, U. S. A.
    • Year and Date
      2014-06-02
    • Related Report
      2014 Research-status Report
  • [Presentation] Real-Time Observation of Magnetic Structural Change in Frustrated Magnets2014

    • Author(s)
      K. Motoya
    • Organizer
      Studying Kinetics with Neutrons
    • Place of Presentation
      Institue Laue Langevin, Grenoble, France
    • Related Report
      2013 Research-status Report
  • [Presentation] Real-time observation of magnetic structural change in frustrated magnets2013

    • Author(s)
      K. Motoya, T. Moyoshi, M. Hagihala and M. Matsuda
    • Organizer
      International Conference on Neutron Scattering
    • Place of Presentation
      Edinburgh, UK
    • Related Report
      2013 Research-status Report
  • [Presentation] Impurity Effect on Long-Time Variation of Magnetic Structure in Frustrated Magnet Ca3Co2O62013

    • Author(s)
      T. Moyoshi, T. Suzuki, K. Motoya and M. Matsuda
    • Organizer
      International Conference on Neutron Scattering
    • Place of Presentation
      Edinburgh, UK
    • Related Report
      2013 Research-status Report
  • [Presentation] Real-time observation of magnetic structural change in frustrated magnets2013

    • Author(s)
      K. Motoya
    • Organizer
      日豪中性子散乱ワークショップ
    • Place of Presentation
      シドニー市、オーストラリア原子核研究所
    • Related Report
      2013 Research-status Report
  • [Presentation] Long-time Variation of Magnetic Structure in (Ce-La)Ir3Si2: Effect of Randomness2012

    • Author(s)
      K. Motoya, T. Moyoshi and M. Matsuda
    • Organizer
      International Conference on Magnetism (Busan)
    • Place of Presentation
      Busan, Korea
    • Related Report
      2012 Research-status Report
  • [Presentation] Long-Time Variation of Magnetic Structure in Multistep Metamagnets Ca3(Co-M)2O6: Effect of Disorder2012

    • Author(s)
      T. Moyoshi, R.Takahashi, Y. Ito, R. Irie, T. Ide, D. Syoji and K. Motoya
    • Organizer
      International Conference on Magnetism (Busan)
    • Place of Presentation
      Busan, Korea
    • Related Report
      2012 Research-status Report
  • [Presentation] 多段メタ磁性体Ca3(Co1-xMx02O6における磁気構造の長時間変化:巨視的測定2012

    • Author(s)
      鈴木 琢也、茂吉 武人、元屋 清一郎
    • Organizer
      日本物理学会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 多段メタ磁性体Ca3(Co1-xMgx)2O6の磁気構造の長時間変化:中性子散乱2012

    • Author(s)
      茂吉 武人、鈴木 琢也、元屋 清一郎、松田 雅昌
    • Organizer
      日本物理学会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Presentation] (Ce-La)Ir3Si2における磁気構造の長時間変化:巨視的測定2012

    • Author(s)
      海辺 明誉、茂吉 武人、元屋 清一郎
    • Organizer
      日本物理学会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Remarks] 東京理科大学

    • URL

      https://www.tus.ac.jp/fac_grad/p/achievement.php?1f2f

    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2020-05-15  

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