Effects of HfO 2 /Co interface and Co/HfO 2 interface on anomalous Hall behavior in perpendicular Co/Pt multilayers
Effects of HfO 2 /Co interface and Co/HfO 2 interface on anomalous Hall behavior in perpendicular Co/Pt multilayers
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DOI：
10.1016/j.jmmm.2017.02.049
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发表时间：
2017-07
影响因子：
2.7
通讯作者：
Shaolong Jiang;Guang Yang;J. Teng;Qixun Guo;Yi-Wei Liu;Xu-Jing Li;Guang-Hua Yu
中科院分区：
文献类型：
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作者：
Shaolong Jiang;Guang Yang;J. Teng;Qixun Guo;Yi-Wei Liu;Xu-Jing Li;Guang-Hua Yu
研究了垂直Co/Pt多层膜中HfO 2/Co界面和Co/HfO 2界面对反常霍尔效应（AHE）热稳定性的影响。据观察，热稳定的AHE行为不能获得在垂直的Co/Pt多层膜与HfO 2/Co界面，主要是由于Co-Pt在退火过程中的相互扩散。与此相反，在具有Co/HfO 2界面的垂直Co/Pt多层膜中，尽管存在Co-Pt互扩散，但仍观察到热稳定的AHE特征，这是由于退火后界面改性增强了侧跳和对AHE的本征贡献。
Effects of the HfO2/Co interface and the Co/HfO2interface on thermal stability of anomalous Hall effect (AHE) in perpendicular Co/Pt multilayers have been studied. It is observed that thermally stable AHE behavior cannot be obtained in perpendicular Co/Pt multilayers with the HfO2/Co interface, mainly due to Co-Pt interdiffusion during annealing. In contrast, thermally stable AHE feature is observed in perpendicular Co/Pt multilayers with the Co/HfO2interface despite Co-Pt interdiffusion, which is owing to the enhancement of the side jump and intrinsic contributions to the AHE through interfacial modification after annealing.