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

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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

  • Physics and Astronomy(all)

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