Magnetic macrostructural study of L10 nanocrystalline FePt alloys by means of electron holography

DOI 機関リポジトリ HANDLE Web Site Web Site 参考文献18件
  • Xia Weixing
    Institute of Multidisciplinary Research for Advanced Material, Tohoku Univerisity
  • Kim Joong Jung
    Institute of Multidisciplinary Research for Advanced Material, Tohoku Univerisity
  • Shindo Daisuke
    Institute of Multidisciplinary Research for Advanced Material, Tohoku Univerisity
  • Makino Akihiro
    Institute for Materials Research, Tohoku Univerisity

書誌事項

タイトル別名
  • Magnetic Macrostructural Study of L1<SUB>0</SUB> Nanocrystalline FePt Alloys by Means of Electron Holography

この論文をさがす

抄録

L10 nanocrystalline FePt alloy is directly formed by rapid quenching the melt with simultaneous addition of Zr and B and high coercivity can be obtained in the composition range of (Fe0.55Pt0.45)78Zr2–4B18–20. Single domain characteristic of the nanocrytalline FePt grains is clarified by Lorentz micorosocpy. Through the measurement of original magnetization curve and hysteresis loop, it is proposed that the mechanism of coercivity belongs to nucleation type. Distributions of lines of magnetic flux at demagnetized state and remanent state for two samples of (Fe0.55Pt0.45)78Zr4B18 and (Fe0.55Pt0.45)78Zr2B20 are observed by electron holography through ex situ experiment by applying a magnetic field. Obvious differences in the reconstructed phase images indicate the difference of the coercivities of the two samples.

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 48 (10), 2612-2615, 2007

    公益社団法人 日本金属学会

参考文献 (18)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ