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Panoscopic structural properties and physical properties in quasicrystals containing rare-earth metals

Research Project

Project/Area Number 20900102
Allocation TypeSingle-year Grants
Research InstitutionHokkaido University

Principal Investigator

ISHIMASA Tsutomu  北海道大学, 大学院工学研究科, 教授 (10135270)

Co-Investigator(Kenkyū-buntansha) TAKAKURA Hiroyuki  北海道大学, 大学院工学研究科, 准教授 (30284483)
KASHIMOTO Shiro  北海道大学, 大学院工学研究科, 助教 (60329852)
Project Period (FY) 2008
Project Status Completed (Fiscal Year 2008)
Keywords準結晶 / 希土類合金 / 近似結晶 / スピングラス
Outline of Final Research Achievements

パノスコピックな構造秩序の一例である準結晶を取り上げてその構造と物性を研究した。Cu-Al-Sc合金において準結晶から2種類の近似結晶への相分離を見いだした。この相分離では、前駆現象として、変調型準結晶が生じる。また、Cu-Al-Sc 1/1近似結晶の粉末X線構造解析を行ってTsai型クラスターの原子配置を明らかにした。さらに、2種類の磁性元素を含むZn-Fe-(Sc, Tm)準結晶について磁気測定を行って、7~10Kの凍結温度をもつスピングラスの存在を明らかにした。

Report

(2 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • Research Products

    (4 results)

All 2009 2008

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (1 results)

  • [Journal Article] Magnetic behaviour of Fe and Tm in Zn-Fe-Sc-Tm icosahedral quasicrystal2009

    • Author(s)
      S. Kashimoto, C. Masuda and T. Tshimasa
    • Journal Title

      Z. Kristallogr 224

      Pages: 59-63

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Atomic dynamics of i-ScZnMg and its 1/1 approximant phase : experiment and simulation2008

    • Author(s)
      M. Mihalkovic, 他17名 (内T. IshimasaとH.Takakuraを含む)
    • Journal Title

      Phil. Mag. 88

      Pages: 2311-2318

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of facetted microvoids in Zn-Fe-Sc quasicrystal2008

    • Author(s)
      T. Ishimasa and J. Matsunagi
    • Journal Title

      Phil. Mag. 88

      Pages: 1985-1993

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Formation, stability, and structural properties of Zn-Sc based ouasicrvstals2008

    • Author(s)
      T. Ishimasa
    • Organizer
      10th International Conference on Quasicrystals
    • Place of Presentation
      Zurich, ETH-Zurich Switzerland
    • Year and Date
      2008-07-10
    • Related Report
      2008 Annual Research Report

URL: 

Published: 2010-06-11   Modified: 2016-11-18  

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