Abstract
An analysis of the atomic radial distribution function of Cu0.20As0.35Te0 45 amorphous alloy obtained from quenching of the molten mixture of the elements, has been performed. The short-range order was determined by interpreting the radial distribution function (RDF), using a theoretical expression which takes into account the variation in the atomic scattering factors with the scattering vector module, s, and approximates them to polynomial functions. The tetraand di-coordinated copper hypotheses, quoted in the literature for glassy alloys containing this element, have been considered. It was found that only the tetra-coordinated copper hypothesis is compatible with the structural information that was experimentally obtained. A spatial atomic distribution model was generated in accordance with this copper coordination, using a conveniently modified MonteCarlo random method. A comparative analysis of the structural parameters of this model revealed good agreement with the values given in the literature for similar materials.
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