Partial Structure Factors and Self‐Diffusion in Liquid Copper‐Lead Alloys

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Abstract
The three partial structure factors, S11(k), S22(k) and S12(k) and also the Bhatia‐Thornton structure factors, SNN(k), SCC(k) and SNC(k) are computed for liquid copper‐lead alloys at various concentrations and at different temperatures with a square‐well potential. The total structure factor obtained from these partials compares satisfactorily with the experimental results. The isothermal compressibilities have been calculated from the partial structures in the long wave limit. The self‐diffusion coefficients Di have also been calculated at those concentrations of Cu for this alloy in the linear trajectory approximation of Helfand. From the self‐diffusion coefficients, an estimate of the mutual diffusion coefficients is made to a good approximation.

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