The Crystal Structure of Superconducting La>2CuO>4.032 by Neutron Diffraction

C. Chaillout, M. Marezio, S. W. Cheong, Z. Fisk, M. S. Lehmann, M. Marezio, B. Morosin, J. E. Schirber

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The structure of superconducting La>2CuO>4.032 has been determined by single-crystal neutron diffraction data. The excess oxygen, O4, is located between two adjacent LaO1 layers. The presence of O4 distorts the apical-oxygen O1 sublattice in such that each O4 forms a short bond (1.64 Ɨ) with one O1, which indicates the formation of a strong covalent bond between these two atoms. The Cu and O2 sublattices as well as that of La are not affected by O4, however, 1.6% of the La cations increase their coordination from 9 to 10.

Original languageEnglish (US)
Pages (from-to)97-99
Number of pages3
JournalPhysica Scripta
Issue numberT29
StatePublished - Jan 1 1989

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics


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