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首页> 外文期刊>IEEE Transactions on Magnetics >A Comprehensive Study of Sign Change in Electric Field Control Perpendicular Magnetic Anisotropy Energy at Fe/MgO Interface: First Principles Calculation
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A Comprehensive Study of Sign Change in Electric Field Control Perpendicular Magnetic Anisotropy Energy at Fe/MgO Interface: First Principles Calculation

机译：Fe / MgO界面电场控制垂直磁各向异性能符号变化的综合研究：第一性原理计算

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摘要

Electric field (EF) control on magnetic anisotropy energy (MAE) in the system which contains Fe/MgO interface with Cr underlayer was performed by means of first-principles electronic structure calculations. An opposite sign in EF coefficient (gamma) was observed by introducing Fe/Cr intermixing. This intermixing leads to a substantial rearrangement in the electronic structure due to proximity effects of Fe and Cr. The origin of such an opposite sign in gamma was discussed along with the modulation of occupied and unoccupied d-band near the Fermi level. By introducing a strain effect, the enhancements of MAE and gamma were achieved with the maximum absolute values, 2.43 mJ/m(2) and 170 fJ/Vm, respectively. The present result provides a new possible degree of freedom for the EF control in MAE as the underlayer configuration.
机译：通过第一性原理电子结构计算，对包含Fe / MgO与Cr底层的界面中的磁场各向异性能量（MAE）进行了电场（EF）控制。通过引入Fe / Cr混合，观察到EF系数（γ）的符号相反。由于Fe和Cr的邻近效应，这种混合导致电子结构的实质性重排。讨论了伽玛中这种相反符号的起源以及在费米能级附近对占用和未占用d波段的调制。通过引入应变效应，最大绝对值分别为2.43 mJ / m（2）和170 fJ / Vm，从而实现了MAE和γ的增强。本结果为MAE中的EF控制作为底层配置提供了新的可能的自由度。

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  • 来源
    《IEEE Transactions on Magnetics》 |2019年第2期|1-4|共4页
  • 作者

    Pardede Indra; Kanagawa Tomosato; Ikhsan Nurul; Murata Itsuki; Yoshikawa Daiki; Obata Masao; Oda Tatsuki;

  • 作者单位

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan|Inst Teknol Sumatera, Dept Phys, Lampung 35365, Indonesia;

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan;

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan|Telkom Univ, Sch Comp, Bandung 40257, Indonesia;

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan;

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan;

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan|Kanazawa Univ, Inst Sci & Engn, Kanazawa, Ishikawa 9201192, Japan;

    Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan|Kanazawa Univ, Inst Sci & Engn, Kanazawa, Ishikawa 9201192, Japan;

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  • 正文语种 eng
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  • 关键词

    Magnetic anisotropy energy (MAE); proximity effect; strain effect; voltage control MAE;

    机译：磁各向异性能（MAE）;邻近效应;应变效应;电压控制MAE;

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