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Density and Packing in Uranium Based Metallic Glasses

Published online by Cambridge University Press:  26 February 2011

A. J. Drehman
A. J. Drehman*
Affiliation:
Ames Laboratory-USDOE, Iowa State University Ames, IA 50011
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Abstract

Density and x-ray diffraction measurements were performed over a wide compositional range of U-Fe and U-Co metallic glass ribbons. The compositional dependence of both the density and the average nearest neighbor distance exhibits a change in slope at approximately 28 at.% transition metal. This suggests an “ideal” glass composition possessing a minimum excess volume. A qualitative model of atomic packing is proposed, which is based on the compositional dependence of the atomic volume and nearest neighbor distance.

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