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Si(001)基片插入MgO隔离层对FePt薄膜磁性的影响

杨 真艳, 杨 文韬, 祝 昆
六盘水师范学院物理与电气工程学院

摘要


Si(001)基片上直接生长FePt薄膜,高温热处理容易使薄膜相互扩散,从而导致薄膜的结构、磁性和表面形貌发生变化。插入MgO作为中间隔离层可以有效防止FePt与Si基片间的相互扩散。经过不同高温热处理后,两相间的硬磁-软磁交换作用能保证磁化曲线为方形,薄膜中L10-FePt与A1-FePt两相的的比例对应变化,从而有效调控矫顽力。用X射线衍射仪、振动样品磁强计和原子力显微镜分析了薄膜的结构和磁性,结果表明,加入非磁性MgO隔离层薄膜性质变化明显。

关键词


FePt薄膜;矫顽力;热处理;交换耦合

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参考


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DOI: http://dx.doi.org/10.18686/gdjy.v4i3.41769

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