Abstract

Using the 57Fe Mössbauer spectroscopy, a local atomic order in nanocrystalline alloys of iron with Al, Ni, W and Mo has been determined. Alloys were prepared by mechanical alloying method. Analysis of Mössbauer spectra was performed on the basis of the local environment model in terms of Warren–Cowley parameters. It was shown that impurity atoms are not randomly distributed in the volume of the first and the second co-ordination spheres of 57Fe nuclei and they form clusters.

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