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Superconductivity in the high-Tc Bi-Ca-Sr-Cu-O system: Phase identification

  • R. M. Hazen
  • , C. T. Prewitt
  • , R. J. Angel
  • , N. L. Ross
  • , L. W. Finger
  • , C. G. Hadidiacos
  • , D. R. Veblen
  • , P. J. Heaney
  • , P. H. Hor
  • , R. L. Meng
  • , Y. Y. Sun
  • , Y. Q. Wang
  • , Y. Y. Xue
  • , Z. J. Huang
  • , L. Gao
  • , J. Bechtold
  • , C. W. Chu

Research output: Contribution to journalArticlepeer-review

Abstract

Four phases are observed in superconducting Bi-Ca-Sr-Cu-O samples. The superconducting phase, with onset temperature near 120 K, is a 15.4-layered compound with composition near Bi2Ca1Sr2O9 and an A-centered orthorhombic unit subcell 5.41×5.44×30.78 3. X-ray diffraction and electron microscopy data are consistent with a structure of alternating perovskite and Bi2O2 layers. High-resolution transmission electron microscopy images reveal a b-axis superstructure of 27.2, numerous (001) stacking faults, and other defects.

Original languageEnglish (US)
Pages (from-to)1174-1177
Number of pages4
JournalPhysical review letters
Volume60
Issue number12
DOIs
StatePublished - 1988

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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