Abstract
Magnetic correlations in paramagnetic CuMn alloys containing up to 10 at.% Mn measured using neutron polarization analysis are compared with the predictions of the RKKY interaction and found to agree with the accuracy of the measurements. This implies a ferromagnetic first neighbour interaction. The susceptibility decreases and the atomic short-range order increases in a 1 at.% alloy on annealing at 100 degrees C. The low temperature magnetic order is described more closely by the cluster model of Beck (1972) than by the analysis of Klein and Briut (1963).
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