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首页> 外文期刊>IEEE Transactions on Magnetics >Magnetic Properties and Interfacial Anisotropies of Pt/Co/AlOx Perpendicularly Magnetized Thin Films
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Magnetic Properties and Interfacial Anisotropies of Pt/Co/AlOx Perpendicularly Magnetized Thin Films

机译：Pt / Co / AlO x 垂直磁化薄膜的磁性和界面各向异性

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摘要

The thin films of Pt/Co/AlO, showing perpendicular magnetic anisotropy, were grown by magnetron sputtering with AlO formed by the oxidation of thin Al layers using an oxygen atom source. Films were studied as a function of Pt thickness and Al oxidation, and films that showed full remanence and sharp switching coercivity were achieved. In order to prevent further oxidation of the interface in ambient conditions, we use a double Al growth and oxidation process. The magnetooptical Kerr effect and vibrating sample magnetometry were used to analyze these films. We find an effective perpendicular anisotropy of erg/cm, with the majority of the perpendicular anisotropy coming from the Pt/Co interface. From the sweep rate dependence on the coercivity, we are able to extract an activation volume of 4.3 cm, similar to other Co-based perpendicular systems.
机译：Pt / Co / AlO薄膜显示出垂直的磁各向异性，通过磁控溅射法生长，其中AlO通过使用氧原子源氧化薄薄的Al层而形成。研究了薄膜与Pt厚度和Al氧化的关系，并获得了具有完全剩磁和尖锐转换矫顽力的薄膜。为了防止在环境条件下界面的进一步氧化，我们使用了双重Al生长和氧化工艺。磁光克尔效应和振动样品磁强法用于分析这些薄膜。我们发现有效的垂直各向异性为erg / cm，其中大部分垂直各向异性来自Pt / Co界面。从扫描速度对矫顽力的依赖性，我们能够提取4.3 cm的激活体积，类似于其他基于Co的垂直系统。

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