Studies of oxygen-deficient Ba2YCu3O7-δ and superconductivity Bi(Pb)SrCaCuO

  • R. J. Cava
  • , B. Batlogg
  • , S. A. Sunshine
  • , T. Siegrist
  • , R. M. Fleming
  • , K. Rabe
  • , L. F. Schneemeyer
  • , D. W. Murphy
  • , R. B. van Dover
  • , P. K. Gallagher
  • , S. H. Glarum
  • , S. Nakahara
  • , R. C. Farrow
  • , J. J. Krajewski
  • , S. M. Zahurak
  • , J. V. Waszczak
  • , J. H. Marshall
  • , P. Marsh
  • , L. W. Rupp
  • , W. F. Peck
  • E. A. Rietman

Research output: Contribution to journalArticlepeer-review

231 Scopus citations

Abstract

Ambient temperature measurements of the crystallographic cell parameters for oxygen deficient Ba2YCu3O7-δ prepared by gettered annealing indicate the presence of microscopic differences in the oxygen configuration at fixed δ dependent on annealing temperature. The loss of superconductivity with increasing oxygen deficiency is shown to be due to a step-like increase in length of the plane copper-apical oxygen bond, and not to the orthorhombic to tetragonal transition. The crystal structure of the 84K superconductor Bi2Sr2CaCu2O8+δ is described, as is the stabilization of 110K superconductivity via partial Pb/Bi substitution with long time annealing.

Original languageEnglish (US)
Pages (from-to)560-565
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume153-155
Issue numberPART 1
DOIs
StatePublished - Jun 1988
Externally publishedYes

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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