Structure of Binary Liquid Mixtures. II. Resistivity of Alloys and the Ion-Ion Interaction

Abstract

We have applied the analytic partial structure factors $S_{\mathrm{ij}}\mathrm{}\left(K\right)\mathrm{}$ developed in an earlier work to a study of the resistivity of binary alloys. We find the substitutional model to hold reasonably well, provided that it is modified to incorporate the volume dependence of the pseudopotentials. Deviation from this model can be accounted for by changing the hard-sphere ratio $\alpha$ [used in obtaining $S_{\mathrm{ij}}\mathrm{}\left(K\right)\mathrm{}$] from unity. Such a deviation is non-negligible in Na-K, for example, and is obtained by a calculation of the ion-ion interaction in the alloys. This interaction has been calculated for a number of other alloys as well. Some discussion of the Hg amalgams is also given.