高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (11): 1661.

• 论文 •    下一篇

含氟Y-Ba-Cu-O高温超导体稳定性与结构的研究

钟山1, 俞永勤2, 陈龙武3   

  1. 1. 华东师范大学化学系, 上海, 200062;
    2. 华东师范大学物理系;
    3. 同济大学化学系
  • 收稿日期:1995-10-26 出版日期:1996-11-24 发布日期:1996-11-24
  • 通讯作者: 钟山,男,55岁,高级工程师.
  • 作者简介:钟山,男,55岁,高级工程师.

Studies on the Stability and Structure of High Tc Y-Ba-Cu-O Superconductor with F Element

ZHONG Shan1, YU Yong-Qin2, CHEN Long-Wu3   

  1. 1. Department of Chemistry, East China Normal University, Shanghai, 200062;
    2. Department of Physics, East China Normal University;
    3. Department of Chemistry, Tongji University
  • Received:1995-10-26 Online:1996-11-24 Published:1996-11-24

摘要: 应用BaF2、CuF2和YF3分别部分代换BaO、CuO和Y2O3制得了一系列带有氟元素的Y-Ba-Cu-O高温超导体样品,其中BaF2代换BaO的摩尔量可达45%,样品的零电阻温度为82.5~93.5K.应用XRD、DTA、IR和化学方法研究了样品的结构和稳定性。初步实验结果表明,氟元素只有少量进入超导相,但含氟的Y-Ba-Cu-O超导体在水蒸气和二氧化碳中的稳定性则大大提高。

关键词: 含氟Y-Ba-Cu-O超导体, 稳定性, 结构

Abstract: The samples of high Tc Y-Ba-Cu-Osuperconductor with Felement were prepared by using BaF2,CuF2,YF3 instead of BaO,CuO,Y2O3 respectively.The substitutive ratio was about 45%. The zero-resistance temperature was 82.5~93.5K.By means of X-ray powder diffraction,infrared spectroscopy,difference thermal analysis,the structure and stability of the samples were investigated.The preliminary results show that only small amount of Felement entered the superconductive phase,and made the stability of the high Tc Y-Ba-Cu-Osuperconductor with Felement increasing greatly in the environment of water vapor and carbon dioxide.

Key words: Y-Ba-Cu-O superconductor with F, Stability, Structure

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