Oxygen-induced exchange-coupling reversal at the Mn-Co interface

被引：24

作者：

O'Brien, WL

Tonner, BP

机构：

[1] Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA

[2] Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.58.3191

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a phenomenon associated with surface magnetism: the reversal of exchange coupling induced by oxidation. Ferromagnetically ordered submonolayer films of Mn grown on fee Co(001) have their magnetization direction oriented parallel to the Co magnetization. After oxygen exposure the Mn atoms remain ferromagnetically ordered but their magnetization direction rotates 180 degrees and is now aligned antiparallel to the Co magnetization. This behavior in magnetic coupling between the Mn and Co films is not consistent with recent theoretical predictions. This difference is perceived to lie in the atomic scale morphology at the Mn-Co interface.

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收藏

页码：3191 / 3196

页数：6

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