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The damping coefficient of magnons interacting ‐with drifting carriers in ferromagnetics semiconductors for both k l > 1 and k l < 1 regimes is calculated. It is shown that for CdCr 2 Se 4 the amplification factor can be of the order or greater than the losses of spin waves due to other effects.
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Filho et al. (1973) studied this question.
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