SURFACE ANISOTROPY IN AMORPHOUS TB-FE/AL2O3 MULTILAYERS

被引:2
|
作者
KRISHNAN, R
机构
[1] Laboratoire de Magnétisme Matériaux Magnétiques, CNRS
关键词
D O I
10.1016/0304-8853(92)91031-N
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have studied the anisotropy in Tb-Fe/Al2O3 multilayers prepared by rf sputtering. These samples are amorphous. The perpendicular M - H loops are rectangular and the anisotropy is uniaxial. The product of the effective anisotropy K(eff).t(Tb-Fe) shows a linear dependence with t(Tb-Fe) as normally found for the superlattices yielding the bulk and surface anisotropies of + 1.5 x 10(6) erg cm3 and -0.15 erg cm2, respectively. This is, in our opinion, the first time that a surface anisotropy has been found in such a totally amorphous multilayer. The results are discussed.
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页码:64 / 66
页数:3
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