Thermodynamic calculations for liquid alloys with an application to sodium-caesium

A semi-empirical model is presented for the analysis in liquid alloys of the long wavelength limit of the structure factor, the free energy of mixing and the electrochemical potential. The formalism is partly based on statistical mechanics assuming a concentration-dependent hard-sphere behaviour of liquid alloys. Although being conceptually quite different, our description incorporates the Flory-Huggins model as a first approximation.