Abstract
57Fe Mossbauer effect measurements have been performed at room temperature on the alloy series Al75Cu15−xFexV10 withx=0.15 (amorphous and icosahedral phases), 3 and 6 (icosahedral phases). There is more disorder in the icosahedral phase of thex=0.15 alloy than in its amorphous phase. The bimodal character of the distribution of quadrupole splittings becomes less pronounced with increasingx and disappears forx≥6. This is interpreted in terms of two classes of transition metal sites in Al-transition metal-based icosahedral alloys.
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