DIRECT OBSERVATION OF INTERLAYER EXCHANGE COUPLING BY MOKE IN AMORPHOUS RE-TM SANDWICHES

被引:6
作者
ALAMEDA, JM [1 ]
SALAS, FH [1 ]
GIVORD, D [1 ]
NDJAKA, JMB [1 ]
机构
[1] CNRS,LAB LOUIS NEEL,F-38042 GRENOBLE,FRANCE
关键词
D O I
10.1016/0304-8853(91)90395-Q
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Here we report transverse bias initial susceptibility (TBIS) measurements on amorphous GdCo2/YCo2/GdCo2 (Gd/Y/Gd) and YCo2/GdCo2/YCo2 (Y/Gd/Y) sandwiches (1000 angstrom/1000 angstrom/1000 angstrom) in order to study the interlayer exchange coupling. TBIS was measured by using the magneto-optic Kerr effect. The sandwiched layer of the Gd/Y/Gd and Y/Gd/Y systems reverses its magnetization at an applied magnetic field determined by the compensation between the gain in Zeeman energy and the loss in wall energy. It is observed that the magnetization reversal of the inner layer cannot occur by a coherent-rotation process.
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页码:509 / 512
页数:4
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