YBCO厚膜表面电阻的测量  

MEASUREMANTS OF THE SURFACE RESISTANCE FOR YBCO THICK FILM

作　　者：方家光[1] 吴柏枚[1] 

机构地区：[1]清华大学物理系,中国科技大学物理系

出　　处：《低温物理学报》1994年第6期449-452,共4页Low Temperature Physical Letters

摘　　要：利用电泳法制备的以银为衬底的ＹＢＣＯ超导厚膜已作为频率为５００ＭＨｚ的同轴圆柱腔的内导体，此厚膜的表面积为４０ｃｍ２，当在９０Ｋ附近发生超导转变时，谐振腔体的Ｑ值跃交二个数量级，其相应的表面电阻从１８０ｍΩ减小到１．５ｍΩ左右，而且表面电阻的频率关系符合“经典”超导体所遵守的平方律．Abstract The inner conductor of a 500MHz coaxial cavity is platedby YBCO thick film. Electrophoretic deposition was used as method to cover the massive silver rod. The surface resistance varied from 180mΩ to 1. 5mΩ was measured in the temperature range from 300K to 77K. The date are consistent with a quadratic frequency dependency of classical superconductors.

关 键 词：YBCO 表面电阻 测量 电泳法 银衬衣 超导薄膜 

分 类 号：TM262[一般工业技术—材料科学与工程] O511[电气工程—电工理论与新技术]