Title :
Temperature dependence of interlayer coupling in Fe/Si superlattices
Author :
Endo, Y. ; Kitakami, O. ; Shimada, Y.
Author_Institution :
Res. Inst. for Sci. Meas., Tohoku Univ., Sendai, Japan
fDate :
7/1/1998 12:00:00 AM
Abstract :
We have explored the temperature dependence of the interlayer coupling in Fe/Fe1-xSix superlattices (0.5⩽x⩽1). It is found that the Si content of the Fe1-x Six spacer greatly affects the temperature dependence of the bilinear and biquadratic coupling constants. Neither the “thickness fluctuation” model nor the “loose” spin model proposed by Slonczewski give satisfactory explanations to the temperature-dependent interlayer coupling. Instead, the present experimental results for all spacer compositions ran he reproduced very well by the quantum interference model. We discuss the experimental results based on the above interlayer coupling models
Keywords :
exchange interactions (electron); ferromagnetic materials; iron; magnetic multilayers; silicon; Fe-Si; Fe/Si superlattices; bilinear coupling constants; biquadratic coupling constants; interlayer coupling; quantum interference model; spacer compositions; temperature dependence; thickness fluctuation; Couplings; Energy measurement; Fluctuations; Insulation; Iron; Magnetic field measurement; Magnetic superlattices; Magnetization; Remanence; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
