TRANSITION TO THE PERPENDICULAR EASY-AXIS OF MAGNETIZATION IN NI ULTRATHIN FILMS FOUND BY X-RAY MAGNETIC CIRCULAR-DICHROISM

被引：121

作者：

OBRIEN, WL

TONNER, BP

机构：

[1] Synchrotron Radiation Center, University of Wisconsin-Madison, Stoughton, WI 53589

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.49.15370

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using soft-x-ray magnetic circular dichroism we have observed a change in the easy axis of magnetization in Ni ultrathin films on Cu(001) from parallel to the surface for 5-9 monolayers (ML) to perpendicular for 10-75 ML. This is an unusual effect which is counter to the predictions of magnetic surface anisotropy arguments. We conclude that the effect is due to a shape anisotropy, introduced either by a change in the Ni lattice structure or by three-dimensional morphological changes in the film.

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页码：15370 / 15373

页数：4

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