应用化学 ›› 1990, Vol. 0 ›› Issue (4): 86-89.

• 研究简报 • 上一篇    下一篇

Sr3Cu5O8+x和CaSrCu5O5+x的结构和电学性质

孟建, 曾左韬, 任玉芳   

  1. 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:1989-09-20 修回日期:1989-12-18 出版日期:1990-08-10 发布日期:1990-08-10
  • 基金资助:
    国家自然科学基金

THE STRUCTRUE AND ELECTRIC PROPERTY OF Sr3Cu5O8+x AND CaSrCu3O5+x

Meng Jian, Zeng Zuotao, Ren Yufang   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-09-20 Revised:1989-12-18 Published:1990-08-10 Online:1990-08-10

摘要: 继Y-Ba-Cu-O之后,具有更高T5的Bi-Sr-Ca-Cu-O(简称BSCCO)体系的发现[1,2]引起了人们对高温超导研究的兴趣。研究表明,在BSCCO中存在110K和80K2个超导相[3,4]。由于在制备BSCCO过程中存在复杂的Ca、Sr和Cu复合氧化物,要得到稳定的110K相相当困难, 因此研究Ca-Sr-Cu-O系中间产物的生成条件、性质及其对超导材料的影响很有必要。

关键词: Sr3Cu5O8+x, CaSrCu5O5+x结构, 电学性质

Abstract: The compounds with the compositions of Sr3Cu5O8+x and CaSrCu3O5+x have been syn-thesized by solid phase reaction method. The crystal structures of both compounds are or-thorhombic with a = 3.950Å, b = 11.479Å and c = 13.420Å for Sr3Cu5O8+x and a = 6.489Å,b = 11.280 Å and c = 12.240Å for CaSrCu3O5+x, respectively. The oxygen content and oxida-ation state of copper ion were analysized by the iodometric titration. The electric propertymeasurement indicates that both compounds are p-type semiconductor and have lower resistivity. They decomposes at around 936℃.

Key words: Sr3Cu5O8+x, CaSrCu5O5+x, structure, electric property