Nano-faceting of Cu capping layer grown on Fe/Si (111) and its effect on magnetic anisotropy
Nano-faceting of Cu capping layer grown on Fe/Si (111) and its effect on magnetic anisotropy
复制标题
Fe/Si (111) 上生长的 Cu 覆盖层的纳米面化及其对磁各向异性的影响
DOI：
10.1063/1.4764870
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发表时间：
2012-11-01
影响因子：
3.2
通讯作者：
Cheng, Zhao-Hua
中科院分区：
文献类型：
--
作者：
Liu, Hao-Liang;He, Wei;Cheng, Zhao-Hua
本文报道了在Si(111)衬底上生长超薄Fe膜的铜覆盖层的生长、结构及其对磁各向异性的影响。铜以纳米面的三角形金字塔形式生长，以库尔德朱诺夫-萨克斯取向的外延方式生长。Fe薄膜的自旋重取向转变(SRT)是由铜封盖引起的，认为这主要是由Fe薄膜的应变变化引起的。根据应变释放机制，可以很好地解释随着Fe底层厚度的增加，铜的临界厚度迅速减小而导致SRT的原因。
We represent a report on the growth and structure of Cu capping layer on ultrathin Fe films on Si (111) substrate as well as its effect on magnetic anisotropy. Cu grows as forming triangular-shaped pyramids with nano-facets and in epitaxial mode with Kurdjumov-Sachs orientation. Spin reorientation transition (SRT) from out-of-plane to in-plane of Fe films is induced by Cu capping, which is believed to be mainly affected by strain change in Fe films. Based on strain relief mechanism, rapid decrease in Cu critical thickness to induce SRT with increasing Fe underlayer thickness can be interpreted quite well.