物理化学学报 >> 1991, Vol. 7 >> Issue (06): 648-650.doi: 10.3866/PKU.WHXB19910603

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YBCO高温超导体与氧化物衬底的化学反应性

赵良仲   

  1. 中国科学院化学研究所,北京 100080
  • 收稿日期:1991-06-24 修回日期:1991-08-08 发布日期:1991-12-15
  • 通讯作者: 赵良仲

The Chemical Interaction of YBCO High-Tc Superconductor with Oxide Substrate Materials

Zhao Liang-Zhong   

  1. Institute of Chemistry, Academia Sinica, Beijing 100080
  • Received:1991-06-24 Revised:1991-08-08 Published:1991-12-15
  • Contact: Zhao Liang-Zhong

关键词: 钇钡铜氧高温超导体, 氧化物衬底材料, 固态酸碱反应, 酸碱参数

Abstract: Chemical experiments and XPS analysis indicate that YBCO superconductor is a relatively strong base, and Ba-O components in YBCO is primarily responsible for its hasicity. Based on the basic property of YBCO, it is suggested that the chemical interactions between YBCO and oxide substrate materials is primarily solid acid-base reactions. The acid-base parameters for substrate materials (MgO, ZrO_2, Al_2O_3 and SiO_2) are calculated and used as a scale for measuring the acidity or basicity of the oxide substrates and for evaluating the YBCO-substrates chemical reactivity. It is found that the chemical reactivity increases with increasing acid-base parameter (or increases with increasing acidity) of the substrate materials. Therefore the chemical reactivity with YBCO increases in the order of MgOThe above rule is also suitable for chemical reaction of BSCCO superconductor with oxide substrate materials.

Key words: YBa2Cu3O7 high-Tc superconductor, Oxide substrate materials, Solid acid-base reaction, Acid-base parameter