Spin reorientation transition and magnetic domain structure of Co ultrathin films grown on a faceted Au(455) surface

被引：9
|
作者：
Gao, J. H. [1 ]
Girard, Y. [1 ]
Repain, V. [1 ]
Tejeda, A. [1 ]
Belkhou, R. [2 ]
Rougemaille, N. [3 ,4 ]
Chacon, C. [1 ]
Rodary, G. [1 ]
Rousset, S. [1 ]
机构：
[1] Univ Paris 07, CNRS, Lab Mat & Phenomenes Quant, F-75205 Paris 13, France
[2] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
[3] CNRS, Inst Neel, F-38042 Grenoble 9, France
[4] Univ Grenoble 1, F-38042 Grenoble 9, France
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.77.134429
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The spin reorientation transition (SRT) and magnetic domain structure of Co ultrathin films on faceted Au(455) surfaces have been investigated as a function of thickness by using magneto-optic Kerr effect and x-ray photoemission electron microscopy in combination with x-ray magnetic circular dichroism. The magnetization easy axis of the Co films is found to rotate from an out-of-plane to an in-plane orientation perpendicular to the atomic steps of the substrate due to the dominant contribution of the step-induced magnetic anisotropy. Moreover, magnetic stripe domains are observed to replicate the underlying periodic facets of the Au surface. Depending on the facet, the SRT occurs at a well-defined critical thickness and proceeds via a different mechanism: a state of uniform canted magnetization is formed for (233) facets, while the SRT involves continuous magnetization rotation followed by the nucleation of small in-plane magnetic domains for (677) facets.
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页数：8
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