YO_<1.5>-BaO(BaCO_3)-SrO-CuO系における生成相と相関係 Phases and their Relations in the YO_<1.5>-BaO(BaCO_3)-SrO-CuO System
Phases and their relations in the Y0<SUB>1.5</SUB>-BaO(BaCO<SUB>3</SUB>)-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)<SUB>2</SUB>CuO<SUB>2</SUB>(CO<SUB>3</SUB>)<SUB>y</SUB>, 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 Sr<SUB>2</SUB>CuO<SUB>2</SUB>(C0<SUB>3</SUB>). The phase N has an orthorombic sturucture with lattice parameters of a=3.855Å, b=3.764Å, and c=12.69Å.
粉体および粉末冶金 43(2), 162-167, 1996-02-15
Japan Society of Powder and Powder Metallurgy