Modelling of the thermodynamic properties of the ABr-CeBr3 (A=Li-Cs ) systems

The thermodynamic properties of the ABr-CeBr3 (A=Li-Cs) systems were assessed by the CALPHAD method. The liquid phase in the systems was described by the non-stoichiometric associate model. The entropies of mixing in the liquid ABr-CeBr3 (A=Li,Na) systems are evaluated from experimental data. The entropies of mixing in the liquid ABr-CeBr3 (A=K,Rb,Cs) systems, and the Gibbs energies of formation of pseudobinary compounds: A3CeBr6(s), A2CeCl5(s), ACe2Cl7(s) (A=K,Rb,Cs) were estimated due to the lack of experimental data. The presence of solid solution near NaBr was predicted from calculations. The nature of the liquid phase and precision of calculations were discussed.