EXCHANGE COUPLING IN MAGNETIC MULTILAYERS - A THEORETICAL-STUDY OF FE/CR

被引：3
作者：
EDWARDS, DM
MUNIZ, RB
MATHON, J
机构：
[1] CITY UNIV LONDON,DEPT MATH,LONDON EC1V 0HB,ENGLAND
[2] UNIV FED FLUMINENSE,DEPT FIS,BR-24020 NITEROI,RJ,BRAZIL
来源：
PHYSICA SCRIPTA | 1992年 / T45卷
关键词：
D O I：
10.1088/0031-8949/1992/T45/019
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The exchange coupling between magnetic layers, across a non-magnetic spacer layer, is observed to oscillate as a function of spacer thickness. In earlier work it was shown that the oscillation periods are characteristic of the spacer and it is shown now that the amplitude and phase depend critically on the matching between spacer and ferromagnet. Detailed tight-binding calculations of the coupling across a chromium spacer, using five d orbitals, exhibit oscillations with components of several different periods. However an oversimplified matching is used, so that a fully quantitative comparison with experimental work on Fe/Cr/Fe sandwiches cannot yet be made.
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页码：91 / 94
页数：4
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