中华医学超声杂志

应用化学 ›› 1991, Vol. 0 ›› Issue (3): 83-85.

• 研究简报 • 上一篇    下一篇

110K铋基超导相形成的组成条件

任玉芳, 曾左韬, 孟建, 何平   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-01-16 修回日期:1990-08-21 出版日期:1991-06-10 发布日期:1991-06-10

COMPOSITION AND FORMATION OF 110K PHASE IN Bi-Sr-Ca-Cu-O SYSTEM

Ren Yufang, Zeng Zuotao, Meng Jian, He Ping   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-01-16 Revised:1990-08-21 Published:1991-06-10 Online:1991-06-10

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摘要： Bi-Sr-Ca-Cu-O超导材料中存在110K和80K2个超导相[1,2]。其组成是Bi2Sr2Ca2Cu3Oy和Bi2Sr2CaCu2O。但迄今为止,在按2223组成比合成的未掺杂Bi系超导材料中从未得到过纯的110K相,也未见过组成为2223,零电阻温度在100K以上材料的报道。

关键词: Bi-Sr-Ca-Cu-O超导体, 相组成

Abstract: The effects of the composition on the formation of 110K phase, electrical and magnc-tic properties of Bi-Sr-Ca-Cu-O system (2223) have been studied.Only few 110K phasewere found in the sample with nominal 2223 composition and its superconductivity wasvery poor.Appropriatoly change of the nominal composition was in favour of the forma-tion of 110K phase.The Tc of Bi2Sr1.8Ca2·2Cu3·2O, was 112K.

Key words: bismuth, barium, calcium, copper oxide, superconductor, phase composition

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