钙和铈二元掺杂对钇钡铜氧超导体性能的影响  

EFFECT OF CALCIUM AND CERIUM DOPING ON THE SUPERCONDUCTING PROPERTIES OF YBCO

作　　者：艾小倩[1,2,3] 孙爱民[1,2,3] 赵懂叶[1,2,3] 鲁彦忠 刘恒伟[1,2,3] 马耀通[1,2,3] 罗晶[1,2,3] 贾续旭[1,2,3] 郭建平[1,2,3] 

机构地区：[1]西北师范大学物理与电子工程学院,兰州730070 [2]西北师范大学与中国科学院物理研究所极端环境下实验室,兰州730070 [3]甘肃省原子分子物理与功能材料重点实验室,兰州730070

出　　处：《低温物理学报》2012年第1期54-57,共4页Low Temperature Physical Letters

基　　金：甘肃省高等学校基本科研业务费项目(批准号:2009~2012)资助的课题~~

摘　　要：本文用固相反应法制备了Y1-xCax(Ba1-xCex)2Cu3O7-δ(x=0～0.1)一系列样品.利用X射线衍射法(XRD)对其粉体的物相进行了表征,发现随着掺杂量的增加,样品的晶体结构有从正交相向四方相转变的趋势.采用标准四端引线法系统的测量了样品的超导电性,发现随着掺杂量的增加,样品的超导转变温度呈逐渐降低的趋势.并对实验结果进行了详细的理论分析.A series of Y1-xCax（Ba1-xCex）2Cu3O7-δ（x=0～0.1） superconductor samples were prepared by solid- state reaction method. The morphology and structure of samples are characterized by X-ray diffraction. With the increase of substituting quantity, the structure of the sample has trend from the orthogonal phase to tetragonal phase gradually. The samples of superconductivity are measured systematic using normal four terminals method. The result indicates that superconducting transition temperature has a tendency of obvious dropping with the increase of Ca and Ce substituting quantity. And finally, we do the detailed theoretical analysis of experimental.

关 键 词：YBCO超导体 固相反应法 超导转变温度 

分 类 号：TM26[一般工业技术—材料科学与工程]