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

doi:10.2497/jjspm.34.580

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

Faculty of Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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 language	English
Pages (from-to)	580-582
Number of pages	3
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	34
Issue number	10
DOIs	https://doi.org/10.2497/jjspm.34.580
Publication status	Published - 1987

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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Subsolidus Phase Equilibrium in the System Y₂O₃-BaO-CuO at 900°C in Air. / Ikeda, Yasunori; Takano, Mikio; Bando, Yoshichika; Kitaguchi, Hitoshi; Takada, Jun; Miura, Yoshinari; Osaka, Akiyoshi; Takahashi, Katsuaki.

In: Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 34, No. 10, 1987, p. 580-582.

Research output: Contribution to journal › Article › peer-review

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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.",

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

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AU - Ikeda, Yasunori

AU - Takano, Mikio

AU - Bando, Yoshichika

AU - Kitaguchi, Hitoshi

AU - Takada, Jun

AU - Miura, Yoshinari

AU - Osaka, Akiyoshi

AU - Takahashi, Katsuaki

PY - 1987

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AB - 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.

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