Increase of Tc in HgBa2CuOy by reducing treatment

Makoto Itoh, Ayako Tokiwa-Yamamoto, Seiji Adachi, H. Yamauchi

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


The superconductivity of HgBa2CuOy annealed in various reducing as well as oxidizing atmospheres was investigated. The assintered HgBa2CuOy specimens prepared by solid state reaction starting with mono-oxides of Hg, Ba and Cu exhibited superconductivity at 90 K. It was found that the superconductivity critical temperature (Tc) increased up to 96 K after a reducing treatment of the as-sintered specimen, whereas annealing of the specimen in high-pressure oxygen gas resulted in a decrease of Tc.

Original languageEnglish
Pages (from-to)271-273
Number of pages3
JournalPhysica C: Superconductivity and its applications
Issue number3-4
Publication statusPublished - 1993 Jul 15
Externally publishedYes

ASJC Scopus subject areas

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


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