Magnetic uniaxial anisotropy of Fe films grown on vicinal Ag(001)
Magnetic uniaxial anisotropy of Fe films grown on vicinal Ag(001)
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DOI：
10.1103/physrevb.65.184419
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发表时间：
2002-03
影响因子：
3.7
通讯作者：
Yizheng Wu;C. Won;Z. Qiu
中科院分区：
文献类型：
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作者：
Yizheng Wu;C. Won;Z. Qiu
使用表面磁光克尔效应技术，研究了在邻位 Ag(001) 衬底上生长的 Fe 薄膜中的阶跃感应磁各向异性。我们发现阶跃感应磁各向异性与高达 61 ML 的 Fe 膜厚度无关。 Ag 或 Pd 原子的阶梯修饰也显示出对阶梯感应磁各向异性没有影响。这些结果表明，该系统中的阶梯感应磁各向异性并不局限于阶梯边缘。我们认为，由于 fec Ag 和 bec Fe 之间在薄膜法线方向上的大晶格失配，Fe 薄膜内部的应变是该系统中阶跃感应磁各向异性的主要贡献。
Step-induced magnetic anisotropy was investigated in Fe films grown on a vicinal Ag(001) substrate using the surface magneto-optic Kerr effect technique. We found that the step-induced magnetic anisotropy is independent of the Fe film thickness up to 61 ML. Step decoration with Ag or Pd atoms also shows no effect on the step-induced magnetic anisotropy. These results indicate that the step-induced magnetic anisotropy in this system does not localize at the step edges. We suggest that strain inside the Fe film due to the large lattice mismatch between fec Ag and bec Fe in the normal direction of the film is the dominant contribution to the step-induced magnetic anisotropy in this system.