Phases and their Relations in the YO1.5-BaO(BaCO3)-SrO-CuO System

Takeyuki Kikuchi; Yoshihiro Kusano; Jun Takada; Yasunori Ikeda; Mikio Takano; Yoshichika Bando

doi:10.2497/jjspm.43.162

Phases and their Relations in the YO_1.5-BaO(BaCO₃)-SrO-CuO System

Takeyuki Kikuchi, Yoshihiro Kusano, Jun Takada, Yasunori Ikeda, Mikio Takano, Yoshichika Bando

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Keywords: phase diagram, YO_1.5-BaO(BaCO₃)-SrO-CuO system, (Y,Ba,Sr,)₂CuO₂(CO₃)_y, oxycarbonate

JOURNAL OPEN ACCESS

1996 Volume 43 Issue 2 Pages 162-167

DOI https://doi.org/10.2497/jjspm.43.162

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Abstract

Phases and their relations in the Y0_1.5-BaO(BaCO₃)-SrO-CuO system at 900°C in air have been studied mainly by the powder X-ray diffraction method. It was found that two new phases with compositions of (Y, Ba, Sr)₂CuO₂(CO₃)_y, Bs.s, and Y:Ba:Sr:Cu = 0.5:0.7:1.0:1.0, N, formed in this system. The newly found phase Bs.s was isostructural with the oxycarbonate Sr₂CuO₂(C0₃). The phase N has an orthorombic sturucture with lattice parameters of a=3.855Å, b=3.764Å, and c=12.69Å.

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