Subsolidus Phase Equilibrium in the System Y2O3-BaO-CuO at 900°C in Air

Yasunori Ikeda, Mikio Takano, Yoshichika Bando, Hitoshi Kitaguchi, Jun Takada, Yoshinari Miura, Akiyoshi Osaka, Katsuaki Takahashi

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Abstract

The subsolidus phase equilibrium in the Y2O3-BaO-CuO system at 900°C in air was determined by solid-state reaction techniques and the powder x-ray diffraction method. The system was found to contain three quaternary compounds, i. e. YBa^CuaOx, YsBaCuOe, and a perovskite like solid solution having a composition of YsxBaa-xCuO^ whose x ranges from 0.07 to 0.25. The structural symmetry of the last material changes from tetragonal orthorhombic tetragonal as x increases. Furthermore, a new ternary compound Ba2CuOx has been isolated whose structure is tetragonal K2NiF4 type with lattice parameters a=3.988A and c=12.988A.

Original languageEnglish
Pages (from-to)580-582
Number of pages3
JournalJournal of the Japan Society of Powder and Powder Metallurgy
Volume34
Issue number10
DOIs
Publication statusPublished - 1987

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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    Ikeda, Y., Takano, M., Bando, Y., Kitaguchi, H., Takada, J., Miura, Y., Osaka, A., & Takahashi, K. (1987). Subsolidus Phase Equilibrium in the System Y2O3-BaO-CuO at 900°C in Air. Journal of the Japan Society of Powder and Powder Metallurgy, 34(10), 580-582. https://doi.org/10.2497/jjspm.34.580