Hg vapor pressure, phase stability, and synthesis of Hg1-xBa2Can-1CunO 2n+2+δ with n ≤ 3

Y. Y. Xue, R. L. Meng, Q. M. Lin, B. Hickey, Y. Y. Sun, C. W. Chu

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The stability of Hg1-xBa2Can-1CunO 2n+2+δ [Hg12(n - 1)n] and its competing phase, HgCaO2, at synthesis temperatures were studied in terms of their equilibrium Hg vapor pressure PHg. It was found that the stability of Hg12(n - 1)n varies with n in a complex way. It was also observed that traces of moisture and/or carbon dioxide reduce the PHg of HgCaO2, while partially substituting Re, Pb and Mo for Hg suppresses the PHg of Hg12(n - 1)n. Possible relationships between the beneficial substitution effect, the change of cation valence, and the defect structures in Hg12(n - 1)n are proposed.

Original languageEnglish
Pages (from-to)11-16
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue number1
Publication statusPublished - 1997

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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