This paper uses self-association model to compute the concentration dependence of free energy of mixing (?°???º?°??????), activity (a), and the microscopic properties such as concentration fluctuation in the long wavelength limit (?°???????°??????°?????), and Warren-Cowley short range order parameter (?°????¼1) for Sn-Zn binary liquid alloy. The calculation reveals the homo-coordination or phase separation at all concentrations with moderate interaction for Sn-Zn liquid alloy at 750 K.
