Artificial fabrication and order parameter estimation of L1[0]-ordered FeNi thin film grown on a SuNi buffer layer

DOI Web Site 被引用文献20件 参考文献10件
  • Mizuguchi M.
    Institute for Materials Research, Tohoku Univ.
  • Kojima T.
    Institute for Materials Research, Tohoku Univ.
  • Kotsugi M.
    Japan Synchrotron Radiation Research Institute (SPring-8/JASRI)
  • Koganezawa T.
    Japan Synchrotron Radiation Research Institute (SPring-8/JASRI)
  • Osaka K.
    Japan Synchrotron Radiation Research Institute (SPring-8/JASRI)
  • Takanashi K.
    Institute for Materials Research, Tohoku Univ.

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タイトル別名
  • Artificial Fabrication and Order Parameter Estimation of L10-ordered FeNi Thin Film Grown on a AuNi Buffer Layer

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  Epitaxial L10-ordered FeNi thin films were artificially fabricated on a nonmagnetic AuNi buffer layer by using an alternate monatomic layer deposition. A uniaxial magnetic anisotropy energy of the FeNi layer was estimated to be 5.8 × 106 erg/cm3 from magnetization measurements, which is the largest energy among values reported on FeNi thin films grown on nonmagnetic buffers. A long-range order parameter of the FeNi layer was estimated to be 0.330 from a grazing incidence X-ray diffraction (GI-XRD) using synchrotron radiation. We also investigated the relation between the ratio of c-axis lattice constant to a-axis lattice constant (c/a ratio) and the uniaxial magnetic anisotropy energy of FeNi thin films grown on several buffer layers. The uniaxial magnetic anisotropy energy monotonically increased with the increase in the c/a ratio, whereas the anisotropy had no clear relation with the long-range order parameter. Not only the improved long-range order parameter but optimized c/a ratio in FeNi are expected to lead to the enhancement of the perpendicular magnetic anisotropy.

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