Search for novel high temperature superconducting materials: A new 126 K system, Ba2Can-1+xCun+yOz

C. W. Chu, Y. Cao, Z. L. Du, L. Gao, K. Ross, I. Rusakova, Y. Y. Sun, N. L. Wu, Y. Y. Xue

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


An approach in the search for high temperature superconductors with a Tc above 120 K without volatile toxic elements is proposed and its rationale is given. The compound system Ba2Can-1+xCun+yOz = (Cax,CUy)Ba2Can-1Cu nOz with a Tc up to 126 K has thus been successfully synthesized under high pressure and characterized. Another three superconducting phases at 90, 105, and 116 K, respectively, were also detected. The compound system offers a possibility for high temperature superconducting (HTSg) thin-film devices operable above 120 K, reachable in space by a passive cooler, when its stability is improved; and an opportunity to investigate the dimensionality effect on high temperature superconductivity.

Original languageEnglish
Pages (from-to)57-60
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 1997 Aug

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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