摘要
在名义组份为 Tl_(1-x)In_xBaCa_3Cu_3O_y 的样品中,发现当 x≤0.7时,样品呈超导电性,T_c 较无 In 样品略低,但仍在100K 以上。X-射线衍射分析表明,起超导作用的为2223相。样品还含有不超导的 Cu_7In_4O_11相。当 x≥0.8时,超导电性遭到破坏。
It is found that samples with nominal composition Tl1-xInxBaCa3 Cu3Oy show superconductivity when x≤0.7, with transition temperatures lower than that for samples without In, but higher than 100K. X-ray diffraction shows the 2223 phase is the one responsible for superconductivity. The samples also contain non-superconducting phase of Cu7In4O11. Their superconductivity is destroyed when x≥0.8.
出处
《低温与超导》
CAS
CSCD
北大核心
1990年第3期43-46,共4页
Cryogenics and Superconductivity
