“…Recently Stringfellow and Greene (5) have used a quasichemical model for the liquid and for the solid solutions, along with phase and thermodynamic data for the Ga-As, In-As, GaAs-InAs (pseudobinary), and Ga-In systems to calculate a ternary phase diagram for the Ga-In-As system. In (6) for Ga-As, the data of Hall (7) and Koster and Thomas (8) for In-As, and the data of Van Hook and Lenker (4) for the GaAs-InAs pseudobinary to plot experimental liquidus isotherms in the Ga-In-As ternary phase diagram of Fig.…”