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Abstract <p>In the quasi-quaternary system BaO–Sc<sub>2</sub>O<sub>3</sub>–CuO–MoO<sub>3</sub>, the possibility of obtaining phases with perovskite structure was investigated by varying the chemical composition, temperature, and annealing atmosphere. A perovskite-like solid solution Ba<sub>4</sub>Sc<sub>2</sub>CuMoO<sub>11</sub> 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 Ba<sub>4</sub>Sc<sub>2</sub>CuMoO<sub>11</sub> at 810–820 and 960–975°C were found by DTA-TG.</p>

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

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • M. N. Smirnova,
  • G. D. Nipan,
  • G. E. Nikiforova,
  • G. A. Buzanov,
  • D. F. Kondakov,
  • A. A. Arkhipenko

摘要

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.