Structural Characteristics and Magnetic Properties of La doped Fe-Ga Thin Films

DOI
  • Nishina R.
    Graduate School of Engineering, Tohoku University
  • Muroga S.
    Graduate School of Engineering, Tohoku University
  • Miyazaki T.
    Faculty of Engineering, Tohoku University
  • Endo Y.
    Graduate School of Engineering, Tohoku University Center for Science and Innovation in Spintronics (CSIS), Tohoku University

Bibliographic Information

Other Title
  • La添加したFe-Ga薄膜における構造と磁気特性

Abstract

<p>  This paper describes a study on the structural characteristics and magnetic properties of La doped Fe-Ga (Fe-Ga-La) thin films with a thickness of 50 nm. The Fe-Ga-La films showed a bcc polycrystalline structure regardless of the La content, and their crystallite size became smaller as the La content increased. Both soft magnetic properties and high-frequency magnetic properties were markedly improved in a range of La content above 4.6 at. %, which might be attributed to induced uniaxial magnetic anisotropy and magnetic inhomogeneity. In particular, the saturation magnetostriction of the films became maximum at a La content of 0.8 at. %, and its value was approximately 61.2 ppm. This result is similar to that of bulk Fe-Ga alloy with rare-earth doping. Thus, slight rare-earth doping plays an important role in the improvement of the saturation magnetostriction in Fe-Ga polycrystalline films.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390299993933043072
  • DOI
    10.20819/msjtmsj.24tr813
  • ISSN
    24320471
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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