Bi－Sr－Ca－Cu－O超导体系成相研究

Study On Phase Formation of Bi-Sr-Ca-Cu-O Superconductor System

探索了Ｂｉ系超导体的成相机制。观察到２２０１，２２１２和２２２３相之间的相互转化关系。２２２３相的形成应是２２１２相和固溶体（Ｓｒ＿（１－ｘ－ｙ）Ｃａ＿ｘＰｂ＿ｙ）ＣｕＯ＿２，ｘ＝０．５，ｙ＝０．０３结合的结果；而２２１２相的形成则与２２０１和上述固溶体的相互作用有关。

The mechanism of phase formation of Bi-System superconductor was investigat-ed. The relationship of transition between 2201, 2212 and 2223 phase was observed in experiment.The formation of 2223 phase must be the result of combining the 2212 with a solid solution,(Sr_(1-x-y)Ca_xPb_y)CuO_2,x=0. 50,y=0. 03,and the phase 2212 must be combining 2201 with the solid solution.