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It is shown that the field dependence of the peaks in the AC susceptibility of the PdMn system, for concentrations ranging from close to the ferromagnetic-spin-glass boundary to well into the spin-glass regime, displays systematics which can be accounted for using a Sherrington-Kirkpatrick-like model with model parameters exhibiting readily understood characteristics.
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Roshko et al. (1984) studied this question.
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