Abstract
Magnetisation and AC susceptibility measurements have been performed to characterize the melt-spun Cu 97.5Co 2.5 alloy. The magnetisation curve, at room temperature, shows two contributions, one superparamagnetic and the other nearly paramagnetic. The temperature dependence of the in-phase AC susceptibility shows two maxima with different dynamical character. These two anomalies are ascribed to be superparamagnetic blocking and spin-glass freezing and agree with previous magnetic and structural studies of the same alloy system.
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