OBSERVATION OF THICKNESS DEPENDENCE OF MAGNETIC SURFACE ANISOTROPY IN ULTRATHIN AMORPHOUS FILMS

被引：20
|
作者：
HICKEN, RJ
RADO, GT
XIAO, G
CHIEN, CL
机构：
[1] Department of Physics and Astronomy, The Johns Hopkins University, Baltimore
来源：
PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 15期
关键词：
D O I：
10.1103/PhysRevLett.64.1820
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Ferromagnetic resonance (FMR) and SQUID magnetometry measurements have been made on multilayers of amorphous Fe70B30/Ag. The dependence of the magnetic surface anisotropy constant Ks on the magnetic layer thickness 2L has been determined in the range 1.6 <2L<90 using more than twenty samples. It is found that Ks is constant for 2L>16.5, but decreases monotonically towards zero as 2L decreases from 16.5 towards zero. The FMR results can be well described by a theory developed for ultrathin amorphous ferromagnetic layers. © 1990 The American Physical Society.
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页码：1820 / 1823
页数：4
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