Ordering of oxygen into chains and distribution of hole density in YBa2Cu3O1+x

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30 Citations (Scopus)


A series of Y0.999Gd0.001Ba2Cu3O6+x compounds is studied by Gd3+ EPR in the full range of oxygen content. The fine structu re is modified by the hole distribution in the Cu(2)O2 layers mirroring oxygen chains in the Cu(1)Ox layers. The fine structure of 5 differently occupied first-neighbour Cu(1)Ox oxygen chain configurations surrounding the Gd3+ ions is resolved. Formation of chain begins at a threshold oxygen content x0=0.14. For x>0.14 oxygen in Cu(1)Ox planes is ordered mainly into chains, the amount of disordered oxygen decreases with increasing x. The EPR intensities are in quantitative agreement with a model calculation of 2-dimensionally ordered oxygen chains.

Original languageEnglish
Pages (from-to)11-17
Number of pages7
JournalPhysica C: Superconductivity and its applications
Issue number1-3
Publication statusPublished - Oct 1 1991

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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