Phase diagram studies in the systems La2O3–SrO–Ga2O3 and La2O3–MgO–Ga2O3 at 1400°C in air

Abstract

The ternary systems La₂O₃–SrO–Ga₂O₃ and La₂O₃–MgO–Ga₂O₃ were studied at 1400°C in air with emphasis on LaGaO₃. The compound exhibits a small solid solubility of Sr substituting for La, and Mg substituting for Ga, respectively. In the system La₂O₃–SrO–Ga₂O₃ the compound is stable within a very narrow concentration region. In the system La₂O₃–MgO–Ga₂O₃ it is in equilibrium with most of the phases of the system present at 1400°C.