Compositional short-range order amorphous alloy

HJ. Eifert, B. Elschner, K.H.J. Buschow, Density of states, compositional short-range order, and stabihty of amorphous Zr Cu. alloys, Phys. Rev. B 25 (1982) 7441—7448. 

Laridjani and Sadoc (1981) studied amorphous Gd-Y alloys in the composition range 10 to 90 at% Y by X-ray diffraction. The amorphous alloys were prepared by sputtering onto an aluminum substrate at 78 K under argon pressure. Uniform foils having a thickness of 5 to 10pm were obtained. A chemical short-range order was indicated by the interference and radial distribution function. These authors found that the radial distribution function could be accounted for by a mixture of tetrahedra and octahedra. At low concentrations of Y in Gd or Gd in Y there were four tetrahedra for one octahedra, but the number of tetrahedra increased as the concentration approached an equiatomic mixture of yttrium and gadolinium. 

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