Superconductivity at 112-117 K in HgBa2CaCu2O6+δ

R. L. Meng, Y. Y. Sun, J. Kulik, Z. J. Huang, F. Chen, Y. Y. Xue, C. W. Chu

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The superconducting phase HgBa2CaCu2O6+δ with a sharp transition has been prepared and studied. Through studies of X-ray diffraction patterns, transmission electron microscopy, magnetization, and resistivity, we found that it has a tetragonal symmetry with lattice parameters a=3.862(1) A ̊ and c=12.707(5) A ̊, with a main superconducting transition at ≈ 112 K prior to oxygenation and ≈ 117 K after prolonged oxygenation, and has a rather low irreversibility line. No superstructures of the type previously reported by Schilling et al. and Gao et al. in the >130 K phase were detected in these samples.

Original languageEnglish
Pages (from-to)307-312
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue number3-4
Publication statusPublished - 1993 Sept 10

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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