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Magnetic anisotropic properties of Pd/Co/Pd trilayer films studied by X-ray absorption spectroscopy and magnetic circular dichroism

机译:通过X射线吸收光谱和磁性圆形二色性研究PD / CO / Pd三层膜的磁各向异性特性

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摘要

We study the magnetic anisotropic properties of as-grown and annealed Pd/Co/Pd trilayer films based on their atomic and electronic structures using extended X-ray absorption fine structure (EXAFS), X-ray absorption near edge structure (XANES) spectroscopy and magnetic circular dichroism (XMCD) measurements. The annealed film exhibits interesting perpendicular magnetic anisotropy (PMA) whereas the as-grown film exhibits in-plane anisotropy. Cross-sectional transmission electron microscopic analysis together with the Co K-edge EXAFS results confirm the formation of an ordered-alloy CoPd phase in the annealed film, whereas the as-grown film has an hcp Co-like phase. Co L-3,L-2-edge XMCD measurements reveal an enhanced ratio of the Co 3d orbital to spin moments of the annealed film providing evidence of the observed PMA upon annealing.
机译:我们使用延长的X射线吸收细结构(EXAFS),边缘结构(XANES)光谱附近的X射线吸收,基于其原子和电子结构研究生长和退火PD / CO / PD三层膜的磁各向异性特性。 磁圆形二色(XMCD)测量。 退火薄膜表现出有趣的垂直磁各向异性(PMA),而生长的薄膜表现出面内各向异性。 横截面透射电子显微镜分析与CO k边缘Exafs结果一起证实了退火膜中有序合金COPD相的形成,而生长膜具有HCP共同相。 CO L-3,L-2边缘XMCD测量揭示了CO 3D轨道的增强比率与退火薄膜的旋转时刻提供了在退火时提供所观察到的PMA的证据。

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  • 来源
    《RSC Advances》 |2015年第25期|共6页
  • 作者单位

    Tamkang Univ Dept Phys Tamsui 251 Taiwan;

    Tamkang Univ Dept Phys Tamsui 251 Taiwan;

    Tamkang Univ Dept Phys Tamsui 251 Taiwan;

    Tamkang Univ Dept Phys Tamsui 251 Taiwan;

    Natl Changhua Univ Educ Dept Phys Changhua 500 Taiwan;

    Natl Tsinghua Univ Dept Phys Hsinchu 300 Taiwan;

    Natl Taiwan Normal Univ Dept Phys Taipei 116 Taiwan;

    Natl Taiwan Normal Univ Dept Phys Taipei 116 Taiwan;

    Natl Synchrotron Radiat Res Ctr Hsinchu 300 Taiwan;

    Natl Synchrotron Radiat Res Ctr Hsinchu 300 Taiwan;

    Natl Synchrotron Radiat Res Ctr Hsinchu 300 Taiwan;

    Natl Synchrotron Radiat Res Ctr Hsinchu 300 Taiwan;

    Natl Synchrotron Radiat Res Ctr Hsinchu 300 Taiwan;

    Tamkang Univ Dept Phys Tamsui 251 Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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