摘要
本文报道了Y-Ba-Cu-Ag四元氧化物体系的超导电性。发现少量Ag的存在,可使超导临界转变温度略有提高,转变宽度变窄,而且Ag已经取代Cu,进入斜方形的钙钛矿超导相结构中,再次证明了该特殊的物相结构是导致高Tc超导性的重要原因。
The Superconductivity of the Y-Ba-Cu-Ag-O system is reported in this paper. Our results suggested that the Tc of Y-Ba-Cu-Ag-O superconductor rose slightly and the superconducting transition became sharper when a small amount of silver was doped in it. The silver actually substituted the copper in the superconducting phase structure of the ortho rhombic distortional perovskite. It is confirmed again that the special phase structure is important to cause a high Tc superconductivity.
出处
《南京工业大学学报（自然科学版）》
CAS
1989年第2期32-37,共6页
Journal of Nanjing Tech University(Natural Science Edition)
关键词
Y-Ba-Cu-Ag-D系化合物
高温超导相结构
超导陶瓷
compounds in the Y-Ba-Cu-Ag-O system
high Tc superconducting phase structure
superconducting ceramics
