It is proposed that the large linear term in the low-temperature specific heat of dilute magnetic alloys is due to the magnetization of clusters of near-neighbor magnetic impurities, which can be weakly coupled to one another because of the existence of easy axes of magnetization produced by the anisotropic part of the near-neighbor exchange. The concentration independence of the linear term is shown to be consistent with this hypothesis.
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B. Window (1974) studied this question.
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