Optimization and calculation of the LaBr3–MBr (M=Na, K, Rb, Cs) phase diagrams

Abstract In this paper, the phase diagrams of the LaBr3–MBr (M=Na, K, Rb, Cs) systems are optimized and calculated with the CALPHAD technique. The new modified quasi-chemical model in the pair approximation for local order was used to describe the Gibbs energies of the liquid in these systems. A set of thermodynamic functions has been optimized on the basis of an interactive computer-assisted analysis. The optimized thermodynamic parameters were used to calculate the thermodynamically self-consistent phase diagrams.