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APS » Journals » Phys. Rev. B » Volume 35 » Issue 13
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Phys. Rev. B 35, 7245–7248 (1987)

Room-temperature structure of the 90-K bulk superconductor YBa2Cu3O8-x

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Y. LePage
Division of Chemistry, National Research Council of Canada, Ottawa, Canada K1A 0R9

W. R. McKinnon, J. M. Tarascon, L. H. Greene, G. W. Hull, and and D. M. Hwang
Bell Communications Research, 331 Newman Springs Road, Red Bank, New Jersey 07701

Received 13 March 1987; published in the issue dated 1 May 1987

The 90-K superconducting phase of Y-Ba-Cu-O has been isolated, and its structure at room temperature determined by single-crystal x-ray diffraction. The material is an oxygen-defect perovskite, with composition YBa2Cu3O8-x. Entire planes of oxygen atoms between copper atoms are missing from the perovskite structure. The result is a quasi-two-dimensional structure in which sandwiches of Ba2Cu3O8-y are separated by layers of Y.

© 1987 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.35.7245
DOI:
10.1103/PhysRevB.35.7245
PACS:
61.60.+m, 74.10.+v, 74.30.Ci, 74.70.-b
 
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