INTRINSIC AND SECONDARY MECHANISMS FOR BIQUADRATIC EXCHANGE COUPLING IN MAGNETIC TRILAYERS

被引：61

作者：

EDWARDS, DM ^{[1
]}

WARD, JM ^{[1
]}

MATHON, J ^{[1
]}

机构：

[1] CITY UNIV LONDON,DEPT MATH,LONDON EC1V 0HB,ENGLAND

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 126卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(93)90631-B

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown for a simple model that intrinsic biquadratic exchange is associated with higher harmonics in the oscillatory exchange coupling. Consequently it is much smaller than the bilinear exchange and falls off much more rapidly with increasing temperature. Neither the intrinsic mechanism nor Slonczewski's secondary mechanism seems to explain the strong observed biquadratic exchange in Fe/Al/Fe and a suggestion is made for resolving the difficulty.

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页码：380 / 383

页数：4

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