TlBaCaCuO超导体的时效稳定性  

Stability of Time Effects of TlBaCaCuO Superconductors

作　　者：陈宏琦[1] 千正男[1] 王德涌[1] 

机构地区：[1]吉林大学物理系

出　　处：《低温与超导》1995年第2期8-11,共4页Cryogenics and Superconductivity

摘　　要：该文研究了具有不同Ｔｌ缺位的Ｔｌ－２２２３和Ｔｌ－２２１２超导体的结构和超导转变温度的时效稳定性。具有较大Ｔｌ缺位的超导体在干燥箱中长时间放置后，部分超导相分解使Ｔｃ严重下降，而Ｔｌ缺位较小的超导体，晶体结构比较稳定，转变温度只发生微小的退化。Abstract The stability of time effects of Tl-2223 and Tl-2212 superconductors with a different deficiency has been investigated. The superconductor post-annealed for a long period of time has partly decomposed and makes Tc decrease after it restored in a desiccator for two years. For other superconductors obtained directly from high temperature sintering,their crystal structure is stable and Tc occurs only a small degradation.

关 键 词：时效 转变温度 稳定性 化合物超导体 高TC 

分 类 号：TM262[一般工业技术—材料科学与工程]