Magnetic coupling in Fe/Nb multilayers: A neutron reflectivity study

被引：17
作者：
Rehm, C
Nagengast, D
Klose, F
Maletta, H
Weidinger, A
机构：
[1] Hahn-Meitner-Institut Berlin, D-14109 Berlin
来源：
EUROPHYSICS LETTERS | 1997年 / 38卷 / 01期
关键词：
D O I：
10.1209/epl/i1997-00535-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Fe/Nb multilayers with different Nb layer thicknesses were investigated by neutron reflectometry. In accordance with previous work, we find that magnetic coupling of the Fe layers oscillates between ferro- and antiferromagnetic as a function of the Nb spacer layer thickness for t(Nb) < 24 Angstrom. However, for larger Nb thicknesses only antiferromagnetic ordering, probably caused by dipolar coupling, is observed. Magnetic domains have lateral extensions of 0.7 to 10 mu m as derived from off-specular reflectivity; the domain sizes oscillate correlated with the strength of the coupling.
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页码：61 / 66
页数：6
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