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Physical Review B
Spin wave resonances, observed in an amorphous Gd6.9Co74Mo12.8Ar6.3 ferrimagnetic alloy film, indicate that the exchange stiffness constant, A, decreases rapidly with increasing temperature. By extension of spin-wave theory to ferrimagnets, the temperature dependence of A has been interpreted in terms of a two sub-network ferrimagnet.(AIP). © 1979, American Institute of Physics. All rights reserved.
S. Maekawa, R.A. Treder, et al.
Physical Review B
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Physical Review B
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J Magn Magn Mater
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IEEE Transactions on Magnetics