Thermodynamic and Structural Properties of Charged-Hard-Sphere Mixtures —Application to the Liquid CsAu Alloy

Abstract

Theories of the excess energy, the Helmholtz free energy, the entropy and the partial and the total structure factors are described on the basis of the charged-hard-sphere model in the mean spherical approximation. In connection wth the charge ordering the important role of the excess entropy is emphasised in addition to that of the charge-charge correlation function.
The theories are applied to the liquid CsAu alloy. It is pointed out that the detailed studies of the partial structure factors and the entropy of mixing give the important information on the degree of the charge ordering in the system.