A THERMODYNAMIC EVALUATION OF THE MN-TE BINARY-SYSTEM

Because the MnTe compound is a promising material for semi-conductor a pplications when incorporated in multi-component alloys, the Mn-Te bin ary system has been critically assessed using an optimization procedur e. 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 thermodyn amic properties have been calculated and compared with the experimenta l values. The uncertainty in the experimental phase diagram is discuss ed relative to the thermodynamic modelling. The thermodynamic modellin g is consistent with a congruent melting of MnTe.