Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (09): 809-812.doi: 10.3866/PKU.WHXB19940908

• ARTICLE • Previous Articles     Next Articles

An Empirical Criterion for Superconductivity of Oxides

Zhao Liang-Zhong   

  1. Institute of Chemistry,Academia Sinica,Beijing 100080
  • Received:1993-05-08 Revised:1993-09-14 Published:1994-09-15
  • Contact: Zhao Liang-Zhong


 In this article it is suggested that the Sanderson's equalized electronegativity, Seq, can be used as a new empirical criterion for superconductivity of oxides. The criterion shows that the Seq values are between 1.94 and 2.40 for oxide superconductors with Tc above 10K; the Seq values concentrate in a very narrow range from 2.12 to 2.34 for the high-Tc superconductors with Tc above 78K. This criterion can be applied to almost all the oxide superconductors.

Key words: Oxide superconductors, Sandersons equalized electronegativity