Bi2222相单晶生长的相关问题研究  

STUDY ON CORRELATED PROBLEMS TO GROWTH OF Bi2222 SINGLE CRYSTAL

作　　者：孙学峰[1,2,3] 赵霞[1,2,3] 吴文彬 杨平[1,2,3] 李晓光 

机构地区：[1]中国科学技术大学材料科学与工程系 [2]中国科学技术大学结构分析开放研究实验室 [3]山东大学晶体材料研究所

出　　处：《低温物理学报》1998年第5期356-361,共6页Low Temperature Physical Letters

基　　金：国家杰出青年科学基金;国家超导中心资助

摘　　要：从名义组份Ｂｉ２．４Ｓｒ２ＰｒＣｕ２Ｏｙ生长出一种新的Ｂｉ２２２２相单晶，其实际组份测定为Ｂｉ２Ｓｒ１．５Ｐｒ２．５Ｃｕ２Ｏｙ．用Ｘ射线衍射对单晶的结构进行了表征，并且研究了该单晶生长中Ｂｉ２２０１和Ｂｉ２２１２相的交生等相关问题．另外，如果从名义组份为Ｂｉ２．４Ｓｒ１．５Ｐｒ２．５Ｃｕ２Ｏｙ出发，得到的却是Ｐｒ２ＣｕＯ４单晶．Abstract A new kind of single crystals of Bi2222 phase was grown from nominal composition Bi 2.4 Sr 2PrCu 2O y and its actual composition was determined to be Bi 2Sr 1.5 Pr 2.5 Cu 2O y . Structural characterizations were performed on this crystal by X ray diffraction. Some problems correlated to crystal growth, such as integrowth of Bi2201 and Bi2212 phases, were also studied. Additionally, Pr 2CuO 4 single crystals were grown from starting composition Bi 2.4 Sr 1.5 Pr 2.5 Cu 2O y .

关 键 词：高TC Bi2222相 超导体 单晶生长 结构表征 

分 类 号：O511[理学—低温物理] TM262[理学—物理]