NUMERICAL INVESTIGATION OF 90-DEGREES EXCHANGE-COUPLING IN MAGNETIC MULTILAYERS

被引：18

作者：

RIBAS, R ^{[1
]}

DIENY, B ^{[1
]}

机构：

[1] CENG,DRFMC,SP2M MP,F-38041 GRENOBLE,FRANCE

来源：

PHYSICS LETTERS A | 1992年 / 167卷 / 01期

关键词：

D O I：

10.1016/0375-9601(92)90634-X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Evidence for 90-degrees exchange coupling between Fe layers in epitaxial Fe/Cr/Fe sandwiches have recently been reported by various groups. Following Slonczewski's approach, we interpret this 90-degrees coupling as due to spatial fluctuations in the interlayer coupling through the Cr spacer layer caused by the presence of terraces at the Fe/Cr interfaces. We investigate numerically a model based on this assumption. The magnetization curves, coupling energy, effect of the average chromium thickness have been calculated. We demonstrate in particular that this 90-degrees coupling can be represented by a biquadratic variation only for small deviations around 90-degrees. We also show that all intermediate angles between the magnetic moments of the Fe layers from 0-degrees to 180-degrees can be obtained depending on the average thickness of Cr.

引用

页码：103 / 107

页数：5

共 18 条

[1]

DEMOKRITOV S, 1991, IN PRESS P MATERIALS

[2] ANTIFERROMAGNETIC EXCHANGE AND MAGNETORESISTANCE ENHANCEMENT IN CO-RE SUPERLATTICES [J].