First observation of superstructure reflections by neutron diffraction due to oxygen ordering in YBa sub 2 Cu sub 3 O sub 6. 35
Journal Article
·
· Physical Review Letters; (USA)
- Institut fuer Kristallographie der Universitaet, 7400 Tuebingen (Federal Republic of Germany) Hahn-Meitner-Institut Berlin, Berlin (Federal Republic of Germany)
- Institut Laue-Langevin, Grenoble (France)
- Laboratoire de Physique des Solides, Universite Paris-Sud, Orsay (France)
We present results of a structural investigation of oxygen ordering in a 0.1-cm{sup 3} YBa{sub 2}Cu{sub 3}O{sub 6.35} single crystal. For the first time nonmagnetic superstructure reflections have been observed by neutron diffraction. From the intensities a 2 {radical}2 {ital a}{times}2 {radical}2 a{times}{ital c} oxygen ordering model is derived. In this structure half-filled'' CuO chains alternate with quarter-filled'' chains. Only 15% of the basal-plane oxygen atoms contribute to the superstructure.
- OSTI ID:
- 5845482
- Journal Information:
- Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:11; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Journal Article
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Fri Jul 01 00:00:00 EDT 1994
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OSTI ID:7303187
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OSTI ID:565925
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
AMPLITUDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
CRYSTALS
DATA
DIFFRACTION
ELASTIC SCATTERING
ELEMENTS
EXPERIMENTAL DATA
HIGH TEMPERATURE
HIGH-TC SUPERCONDUCTORS
INFORMATION
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
MONOCRYSTALS
NEUTRON DIFFRACTION
NONMETALS
NUMERICAL DATA
ORDER-DISORDER TRANSFORMATIONS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SCATTERING
SUPERCONDUCTORS
SUPERSYMMETRY
SYMMETRY
TEMPERATURE DEPENDENCE
THEORETICAL DATA
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
AMPLITUDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
CRYSTALS
DATA
DIFFRACTION
ELASTIC SCATTERING
ELEMENTS
EXPERIMENTAL DATA
HIGH TEMPERATURE
HIGH-TC SUPERCONDUCTORS
INFORMATION
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
MONOCRYSTALS
NEUTRON DIFFRACTION
NONMETALS
NUMERICAL DATA
ORDER-DISORDER TRANSFORMATIONS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SCATTERING
SUPERCONDUCTORS
SUPERSYMMETRY
SYMMETRY
TEMPERATURE DEPENDENCE
THEORETICAL DATA
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES