112-114 K superconductors Bi1.8Pb0.3Sr2Ca2Cu3Oy by means of a three-step reaction process

Zhengping Xi Zhengping, Chunlin Ji Chunlin, Lian Zhou Lian

科研成果: 期刊稿件文章同行评审

13 引用 (Scopus)

摘要

112-114 K superconductors with nominal composition of Bi1.8Pb0.3Sr2Ca2Cu3Oy were prepared by a three-step reaction process. The process consists of (1) carbonate calcination and BiPbSrCaO matrix formation at 800°C-840°C, (2) flash heating matrix-CuO mixture at 900°C, and (3) sample annealing at 855°C and furnace cooling to 400°C. The samples possess a quite low resistivity before superconductive transition (ρ{variant}-10-1-10-2 mΩ.cm) and have a transition width of 2.5 K. Results from a.c. susceptibility measurement indicate there are two superconducting phases between 100 and 110 K.

源语言英语
页(从-至)1015-1017
页数3
期刊Solid State Communications
72
10
DOI
出版状态已出版 - 12月 1989
已对外发布

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