New family of superconductors containing carbonate group

Hisaho Nakata, Masatomo Uehara, Jun Akimitsu, Yoshio Matsui

Research output: Contribution to journalConference articlepeer-review


A new family of superconductors containing carbonate group has been reviewed. Especially, we emphasize the three new oxycarbonate compounds recently found in our laboratory. 1. Sr2CuO2(CO3)1-x(BO3)x (Tc≈35K) have been synthesized under an ambient pressure. This idea suggests the new method for carrier doping on layered copper oxycarbonate system. 2. Can(Ca,Sr)2Cun+1(CO3)Oy (n=1, 2, 3) have been synthesized under a high pressure(Tc 108K). The superconductivity could be achieved by substituting (BO3)3- for a part of (CO3)2-. 3. A new Hg-system HgBa2Sr2Cu2(CO3)O6+δ has been synthesized. Tc obtained from the magnetic susceptibility is about 66K.

Original languageEnglish
Pages (from-to)84-88
Number of pages5
JournalDenshi Gijutsu Sogo Kenkyusho Iho/Bulletin of the Electrotechnical Laboratory
Issue number6
Publication statusPublished - Dec 1 1994
Externally publishedYes
EventProceedings of ETL Workshop on High Temperature Superconductors - Tsukuba, Jpn
Duration: Dec 6 1993Dec 8 1993

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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