Atomic short range order in CuFe alloys

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Abstract
The clustering of iron atoms in a copper matrix, as determined by earlier Mossbauer effect studies on alloys containing up to 3.1 at.% Fe, has been analysed in terms of the atomic short range order parameter alpha 1. Good agreement is found between the experimental and calculated values of the clustering in groups of two and three nearest neighbour iron atoms and the results are consistent with previous magnetization studies of impurity interaction effects in dilute CuFe alloys. The variation of alpha 1 with concentration can be considered to reflect the mobility of the iron atoms in copper at different compositions and indicates that the diffusion rate of iron atoms is greater in dilute alloys than in more concentrated alloys.