Phase equilibria calculation of LaI3-MI (M=Na, K, Cs) binary systems

The Gibbs energies of liquid phases in the LaI3-MI (M= Na, K, Cs) systems were described by the modified quasi-chemical model. From the measured phase equilibrium data of these binary systems, a set of thermodynamic functions were optimized by using the CALPHAD technique. The enthalpy of mixing and the interaction parameter of the liquid phase were predicted from known data for the LaI3-MI systems.