Perovskite-Like Solid Solution in BaO–Sc2O3–CuO–MoO3 System

Abstract

In the quasi-quaternary system BaO–Sc₂O₃–CuO–MoO₃, the possibility of obtaining phases with perovskite structure was investigated by varying the chemical composition, temperature, and annealing atmosphere. A perovskite-like solid solution Ba₄Sc₂CuMoO₁₁ with tetragonal structure was obtained by the gel combustion method followed by annealing in argon atmosphere at 900°C. Low-enthalpy solid-phase transformations of Ba₄Sc₂CuMoO₁₁ at 810–820 and 960–975°C were found by DTA-TG.