文献类型：期刊文献

英文题名：Positron lifetime study on the As-prepared Cd-doped Pb-1212 superconductive oxides

作者：Zhou, XY; Zhao, WC; Jin, H; Cao, LZ; Zhai, LH; Han, RD

机构：[1]E China Univ Sci & Technol, Dept Modern Phys, Hefei 230027, Peoples R China;[2]Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China;[3]E China Univ Sci & Technol, Natl Synchroton Radiat Lab, Hefei 230027, Peoples R China;[4]E China Univ Sci & Technol, Dept Phys, Hefei 230026, Peoples R China;[5]Anhui Normal Univ, Dept Phys, Wuhu 24100, Peoples R China

年份：1997

卷号：204

期号：2

起止页码：757

外文期刊名：PHYSICA STATUS SOLIDI B-BASIC RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000071318800018)】；

语种：英文

摘要：The positron lifetime as a function of the Cd content x was measured for the as-prepared samples of (Pb1-xCdx)Sr-2(Y0.5Ca0.5)Cu2Oy. A constant long-lived Lifetime was observed for all samples. The intensity of the long-lived lifetimes has an obvious decrease starting at x = 0.3 and indicated the existence of an impurity phase in the sample with x = 0.3. The monotonous decrease of the bulk lifetime for the single-phase samples implies that Cd mainly substitutes for Pb. The changes of the microstructure with Cd content were discussed.