Superconductivity of Bi2-xPbxSr2-xLnxCuOy(Ln=La,Nd) and valence analysis of Bi and Cu

M. Kikuchi, H. Nameki, Y. Syono, R. Suzuki, M. Nagoshi, S. Awaji, N. Kobayashi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Bi2-ZPbzSr2-x(La/Nd)xCuOy (z=0 and 0.4, x=0.2-1.0) was synthesized in air and nitrogen atmosphere. Valence analyses by dichromate titration and iodometry showed Bi valence larger than 3.0 and Cu valence close to 2+ over the wide range of x, being difficult to explain superconductivity. The Tc depends on substituent lanthanoid, La or Nd. The maximum Tc was achieved at x=0.4-0.5 in all these series.

Original languageEnglish
Pages (from-to)683-684
Number of pages2
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
Publication statusPublished - 1991 Dec 1
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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