Study of superconductivity in the Hg-Ba-Ca-Cu-O system

L. Gao, Z. J. Huang, R. L. Meng, J. G. Lin, F. Chen, L. Beauvais, Y. Y. Sun, Y. Y. Xue, C. W. Chu

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120 Citations (Scopus)

Abstract

The high temperature superconducting Hg-Ba-Ca-Cu-O (HBCCO) compound system reported by Schilling et al. has been reproduced with an onset transition-temperature (Tc0) up to ≁140 K and a main transition at ≁135 K, after proper heat-treatment. We found a positive pressure-effect on Tc with a rate of 0.17 to 0.18 K/kbar and an irreversibility line at temperatures higher than that in the double Bi and Tl layered high temperature superconductors (HTS's). The observation suggests that the compounds synthesized by us are underdoped and further Tc enhancement (although not drastic) is possible by proper doping, and the HBCCO system appears to be a better candidate than the double Bi and Tl layered HTS's for applications based on the higher irreversibility line.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume213
Issue number3-4
DOIs
Publication statusPublished - 1993 Aug 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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