PHASE EQUILIBRIA IN THE LaCoO_3LaMnO_3SrCoO_2.5SrMnO_3 SYSTEM

摘要

The phase equilibria in the LaCoO_3,LaMnO_3SrCoO_2.5-SrMnO_3 system were studied at ll00deg.C in air. The existence of SrCo_1-yMnyO_3-δ with the homogeneity range 0.45 ≤ y ≤ 0.55 was confirmed. The homogeneity range of solid solutions of general formula La1-xSr.Co1-xMn_yO_3±б with orthor- hombic, rhombohedral, and cubic structure has been determined. Based on the experimental results and earlier data, the pseudoquaternary phase diagram was constructed.