The miscibility gap in cadmium, mercury and zinc telluride systems: Theoretical description

Miscibility gap locations in the CdTe–ZnTe and HgTe–ZnTe systems are calculated yielding the critical parameters (Tc/K, xc (second compound)) (407, 0.38) and (558, 0.33), respectively. The obtained functions allow us to predict the location of the miscibility gap in the CdTe–HgTe–ZnTe system based on the Kohler and Redlich–Kister–Muggianu procedures. Ternary phase diagrams for the Hg–Cd–Te, Cd–Zn–Te and Hg–Zn–Te systems in the subsolidus region are also estimated based on known thermodynamic properties of the binary systems and our results for the quasi-binary alloys in the paper.