FLUCTUATION MECHANISM FOR BIQUADRATIC EXCHANGE COUPLING IN MAGNETIC MULTILAYERS

被引：428
作者：
SLONCZEWSKI, JC
机构：
[1] IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.67.3172
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show how spatial fluctuations of chromium thickness amounting to one atomic monolayer account phenomenologically for the biquadratic magnetic coupling recently reported in epitaxial Fe/Cr/Fe trilayers. Corresponding fluctuations of the short-period oscillatory term of conventional exchange coupling induce static waves of magnetization whose energy has the observed biquadratic form. An existing calculation of conventional exchange and its recent direct measurements in highly ordered trilayers support our interpretation.
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页码：3172 / 3175
页数：4
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