Temperature-dependent perpendicular magnetic anisotropy of Co-Pt on Cr2O3 antiferromagnetic oxide
Temperature-dependent perpendicular magnetic anisotropy of Co-Pt on Cr2O3 antiferromagnetic oxide
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DOI：
10.1063/1.4850533
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发表时间：
2013-12
影响因子：
4
通讯作者：
T. Nozaki;M. Oida;T. Ashida;N. Shimomura;M. Sahashi
中科院分区：
文献类型：
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作者：
T. Nozaki;M. Oida;T. Ashida;N. Shimomura;M. Sahashi
我们通过研究 Cr2O3/Co-Pt 磁性的温度依赖性，阐明了 Cr2O3/铁磁体界面处界面垂直磁各向异性 (PMA) 的起源。我们在 Cr2O3 阻断温度之上和之下都观察到正大界面 PMA，且 PMA 对温度不太敏感。我们的结果表明，金属/氧化物界面以及 MgO/CoFeB 界面的影响对 Cr2O3/Co-Pt 界面的 PMA 有很大影响，尽管垂直交换耦合的影响也可能对界面 PMA 有轻微影响。
We clarify the origin of the interface perpendicular magnetic anisotropy (PMA) at the Cr2O3/ferromagnet interface by investigating the temperature dependence of the magnetic properties of Cr2O3/Co-Pt. We observed positive large interface PMA both above and below the blocking temperature of Cr2O3, with the PMA being less sensitive to temperature. Our results indicate that the effect of the metal/oxide interface, as well as that of the MgO/CoFeB interface, contributes strongly to the PMA at the Cr2O3/Co-Pt interface, although the effect of perpendicular exchange coupling might also slightly contribute to the interface PMA.