Phase equilibria in the ½ Sm₂O₃–BaO–½ Fe₂O₃ system were systematically studied at 1100°C in air. Two individual compounds: Sm_1.875Ba_3.125Fe₅O_15‐δ and Ba₃SmFe₂O_7.5+δ have been detected in the studied system at 1100°C in air. One more complex oxide with double perovskite structure SmBaFe₂O_5+w has been obtained under reduced oxygen partial pressure. Thermodynamic stability of SmBaFe₂O_5+w and its thermal stability in metastable state in air were determined. The subsolidus phase diagram for the ½ Sm₂O₃ – BaO – ½ Fe₂O₃ system at 1100°C in air has been constructed.

中文翻译：

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Sm2O3–BaO–Fe2O3系统中的相平衡和中间相的稳定性

在1100°C的空气中系统地研究了½Sm ₂ O ₃ –BaO–½ Fe ₂ O ₃体系中的相平衡。两种单独的化合物：钐_1.875的Ba _3.125的Fe ₅ ö _15-δ和Ba ₃以SmFe ₂ ö _{7.5 +δ}已经在所研究的系统在1100检测℃的空气中。在降低的氧分压下，获得了一种具有双钙钛矿结构SmBaFe ₂ O _{5+ w的}复合氧化物。SmBaFe ₂ O _{5+ w的}热力学稳定性测定了其在空气中处于亚稳态时的热稳定性。绘制了在1100°C的空气中½Sm ₂ O ₃ – BaO –½Fe ₂ O ₃系统的亚固相图。