Structural analysis of a binary metallic glass model. I. — The Pd80Si20 alloy

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Abstract
In the first paper of this series devoted to a structural analysis of a binary metallic glass model, we study a Pd80Si20 sample obtained by numerical relaxation. We discuss the reproducibility of the method and make a comparison with the experimental interference functions. Then we undertake a microscopic structural analysis from several points of view : we first study the number of neighbours of each type for each type of atoms; secondly, we analyse the structure by means of the radical plane method; at last, we show that it is possible to generalize the five fundamental characteristic units introduced by Bernal, so that we can define the environment of any Si atom without any ambiguity. All these methods reveal a certain tendency towards a prismatic environment for the metalloids