In替代对Tl-Ba-Ca-Cu-O超导电性的影响  

INFLUENCE OF IN SUBSTITUTION ON THE SUPERCONDUCTIVITY OF TI-Ba-Ca-Cu-O COMPOUND

作　　者：孟宪仁 任燕如[1] 林明柱[1] 林振金 唐为华[1] 涂清云[1] 桑丽华[1] 

机构地区：[1]北京师范大学物理系

出　　处：《低温与超导》1990年第3期43-46,共4页Cryogenics and Superconductivity

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.

关 键 词：超导电性 氧化物超导体 In TI 

分 类 号：TM260.144[一般工业技术—材料科学与工程]