空气气氛高温超导体YBa_2Cu_3O_(7-δ)的制备  

Superconductor YBa_2Cu_3O_7 -δ preparation in air atmosphere

作　　者：薛运才[1] 陈镇平[1] 苏玉玲[1] 王如梅[1] 

机构地区：[1]郑州轻工业学院应用数理系,河南郑州450002

出　　处：《商丘师范学院学报》2002年第5期12-14,共3页Journal of Shangqiu Normal University

基　　金：河南省自然科学基金资助项目

摘　　要：介绍了在空气气氛中制备YBa2Cu3O7-δ超导样品的实验方法.经样品超导体输运特性测定和形貌结构分析,表明烧结温度在950℃左右,烧结时间12h制备的 YBa2Cu3O7-δ超导样品,其超导转变温度为92K,具有完全抗磁性（迈斯纳效应）,同时表明样品晶粒发育良好,且具有良好的单相性和正交结构.In this article the methods of the preparation for YBa2Cu3O7-δ sample in air atmosphere is introduced. By determining the transport property and analyzing the microstructure of YBa2Cu3O7-δ systems, it is shows that, for the samples sintered at 950℃ for 12h, the transition temperature of Y-123 sample reaches 92K. At the same time, the crystal of the sample is well grown and has good single-phase, orthorhomibic structure.

关 键 词：高温超导体 YBA2CU3O7-Δ 制备 空气气氛 结构分析 转变温度 烧结时间 烧结温度 

分 类 号：TM262.05[一般工业技术—材料科学与工程]