A thermodynamic evaluation of the Mn-Te binary system
Résumé
Because the MnTe compound is a promising material for semi-conductor applications when incorporated in multi-component alloys, the Mn-Te binary system has been critically assessed using an optimization procedure. An original set of self-consistent parameters has been established for the liquid phase, described with a non-ideal associate model, and for the non-stoichiometric compounds MnTe and MnTe2, described with a multi-sublattice model. The phase diagram and characteristic thermodynamic properties have been calculated and compared with the experimental values. The uncertainty in the experimental phase diagram is discussed relative to the thermodynamic modelling. The thermodynamic modelling is consistent with a congruent melting of MnTe.