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2008 Fiscal Year Final Research Report

Order-disorder transformation and magnetic transformation of L1_0-type FePd alloy nanoparticles studied by transmission electron microscopy

Research Project

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Project/Area Number 19760459
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Physical properties of metals
Research InstitutionTohoku University

Principal Investigator

SATO Kazuhisa  Tohoku University, 金属材料研究所, 助教 (70314424)

Project Period (FY) 2007 – 2008
Keywords微粒子 / クラスター
Research Abstract

硬質磁性FePdナノ粒子の規則不規則変態を透過電子顕微鏡法・電子回折法により詳細に調べた結果、相変態温度の粒径依存性、変態温度直上での短範囲規則構造、高温での不規則化過程、規則格子形成の臨界粒径と格子歪について新たな知見を得ることができた。これまで不明であったL1_0型規則合金ナノ粒子における規則不規則変態の粒径依存性を実験的に明らかにすることができた。

  • Research Products

    (17 results)

All 2009 2008 2007 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (9 results) Remarks (2 results)

  • [Journal Article] Atomic structure imaging of L10-type FePd nanoparticles by spherical aberration corrected high-resolution transmission electron microscopy2009

    • Author(s)
      K. Sato, T. J. Konno, and Y. Hirotsu
    • Journal Title

      Journal of Applied Physics 105(3)

      Pages: 034308-1-034308-5

    • Peer Reviewed
  • [Journal Article] Intermetallic ordering and structure in Fe-Pd alloy nanoparticles2009

    • Author(s)
      K. Sato, J. G. Wen, J. M. Zuo
    • Journal Title

      Journal of Applied Physics 105(9)

      Pages: 093509-1-093509-7

    • Peer Reviewed
  • [Journal Article] Electron microscopy study of L10-FePtCu nanoparticles synthesized at 613 K2009

    • Author(s)
      Y. Hirotsu, H. W. Ryu, K. Sato, and M. Ishimaru
    • Journal Title

      Journal of Microscopy (in press)

    • Peer Reviewed
  • [Journal Article] L10-type ordered structure of FePd nanoaprticles studied by high-resolution transmission electron microscopy2008

    • Author(s)
      K. Sato, T. J. Konno, and Y. Hirotsu
    • Journal Title

      Proceedings of the 14th European Microscopy Congress 2

      Pages: 619-620

    • Peer Reviewed
  • [Journal Article] L10型FePd規則合金ナノ粒子の長範囲規則度2008

    • Author(s)
      佐藤和久,弘津禎彦
    • Journal Title

      日本結晶学会誌 50(4)

      Pages: 262-268

    • Peer Reviewed
  • [Journal Article] High-resolution transmission electron microscopy analysis of L10 ordering in Fe/Pd thin layers2007

    • Author(s)
      A. Kovacs, K. Sato, and Y. Hirotsu
    • Journal Title

      Journal of Applied Physics 102(12)

      Pages: 123512-1-123512-4

    • Peer Reviewed
  • [Presentation] 走査透過電子顕微鏡によるFePdナノ粒子の極微構造及び立体形状観察2009

    • Author(s)
      佐藤和久,青柳健大,今野豊彦,弘津禎彦
    • Organizer
      日本金属学会2009年春期(第144回)大会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2009-03-30
  • [Presentation] Ll_0 type ordered structure of FePd nanoparticles studied by high-resolution transmission electron microscopy2008

    • Author(s)
      K. Sato, T. J. Konno, and Y. Hirotsu
    • Organizer
      14^<th> European Microscopy Congress
    • Place of Presentation
      Aachen, Germany
    • Year and Date
      2008-09-04
  • [Presentation] Determination of order parameter of single L1_0-FePd nanoparticles by nanobeam electron diffraction2008

    • Author(s)
      K. Sato and Y. Hirotsu
    • Organizer
      XXI Congress of the International Union of Crystallography
    • Place of Presentation
      大阪国際会議場
    • Year and Date
      2008-08-26
  • [Presentation] High-resolution TEM observation of L1_0 type FePd nanoparticles2008

    • Author(s)
      K. Sato, T. J. Konno, and Y. Hirotsu
    • Organizer
      Microscopy and Microanalysis 2008
    • Place of Presentation
      Albuquerque, New Mexico, USA
    • Year and Date
      2008-08-04
  • [Presentation] Atomic structure of L1_0-FePd nanoaprticles studied by high-resolution transmission electron microscopy2008

    • Author(s)
      K. Sato, T. J. Konno, and Y. Hirotsu
    • Organizer
      The 1^<st> International Symposium on Advanced Microscopy and Theoretical Calculations
    • Place of Presentation
      名古屋国際会議場
    • Year and Date
      2008-06-30
  • [Presentation] 方位配向FePd合金ナノ粒子規則構造の高分解能電子顕微鏡観察2008

    • Author(s)
      佐藤和久,今野豊彦,弘津禎彦
    • Organizer
      日本顕微鏡学会第64回学術講演会
    • Place of Presentation
      国立京都国際会館
    • Year and Date
      2008-05-23
  • [Presentation] L1_0型FePd規則合金ナノ粒子の極微構造観察2008

    • Author(s)
      佐藤和久,今野豊彦,弘津禎彦
    • Organizer
      日本金属学会2008年春期(第142回)大会
    • Place of Presentation
      武蔵工業大学
    • Year and Date
      2008-03-28
  • [Presentation] L1_0 ordering and order-disorder transformation in Pd-Co-Fe magnetic nanoparticles2007

    • Author(s)
      A. Kovacs, K. Sato, and Y. Hirotsu
    • Organizer
      6^<th> International Conference on Fine Particle Magnetism
    • Place of Presentation
      Rome, Italy
    • Year and Date
      2007-10-11
  • [Presentation] Fabrication of oriented hard-magnetic alloy nanoparticles and their characterization2007

    • Author(s)
      Y. Hirotsu, K. Sato, A. Kovacs, H. Naganuma, H. W. Ryu
    • Organizer
      The 1^<st> International Symposium on Advanced Magnetic Materials and Applications
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2007-05-30
  • [Remarks]

    • URL

      http://konno-lab.imr.tohoku.ac.jp/

  • [Remarks]

    • URL

      http://db.tohoku.ac.jp/whois/detail/60a015e70906fc5403093e8bed073170.html

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Published: 2010-06-10   Modified: 2016-04-21  

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