OSCILLATORY INTERLAYER EXCHANGE COUPLING OF CO/RU AND PERMALLOY/RU MULTILAYERS INVESTIGATED BY BRILLOUIN LIGHT-SCATTERING

被引:9
|
作者
FASSBENDER, J [1 ]
NORTEMANN, FC [1 ]
STAMPS, RL [1 ]
CAMLEY, RE [1 ]
HILLEBRANDS, B [1 ]
GUNTHERODT, G [1 ]
PARKIN, SSP [1 ]
机构
[1] IBM CORP,DIV RES,ALMADEN RES CTR,SAN JOSE,CA 95120
关键词
D O I
10.1016/0304-8853(93)91200-Q
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have determined the absolute value of the interlayer exchange coupling constant A12 of sputtered Co/Ru and permalloy/Ru multilayers using Brillouin light scattering. The spin wave frequencies and therefore A12 are found to oscillate as a function of the Ru layer thickness in both multilayer systems with a period of 11.5 angstrom. The amplitudes of the oscillations in A12 are found to be smaller by a factor of 2 in permalloy/Ru compared to Co/Ru, which scales with the smaller saturation magnetization in permalloy. Contrary to the Co/Ru system we found evidence for a short period oscillation in permalloy/Ru. Detailed calculations show that the spin-wave frequency oscillations result from the canting of layer magnetizations in the antiferromagnetic coupling regimes.
引用
收藏
页码:270 / 274
页数:5
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