Theory for the temperature dependence of oxygen ordering in YBa sub 2 (Cu sub 1 minus x M x ) sub 3 O sub 7 minus y due to impurities M =Al,Co,Fe
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Institute for Theoretical Physics, Freie Universitaet Berlin, Arnimallee 14, D-1000 Berlin (West Germany)
The temperature dependence of oxygen ordering in YBa{sub 2}(Cu{sub 1{minus}{ital x}M{ital x}}){sub 3}O{sub 7{minus}{ital y}} ({ital M}=Al,Co,Fe) is studied theoretically. A generalized mean-field model including short-range atomic correlations is used to investigate the effect of substitutional impurities on the ordering of oxygen atoms in the Cu(1) basal plane. The calculated phase diagram suggests that the macroscopically tetragonal phase observed for {ital x}{gt}0.025 and {ital y}{congruent}0 transforms at temperatures {ital T}{lt}800 K into an orthorhombic phase if the oxygen content in YBa{sub 2}(Cu{sub 1{minus}{ital x}M{ital x}}){sub 3}O{sub 7{minus}{ital y}} is reduced.
- OSTI ID:
- 6534954
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:1; ISSN PRBMD; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Fri Jun 01 00:00:00 EDT 1990
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·
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Effect of substitutional impurities (Al,Co,Fe,Ga) on the orthorhombic phase of YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
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Sun Oct 01 00:00:00 EDT 1989
· Physical Review (Section) B: Condensed Matter; (USA)
·
OSTI ID:5375964
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COBALT ADDITIONS
COBALT ALLOYS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIAGRAMS
HIGH-TC SUPERCONDUCTORS
IRON ADDITIONS
IRON ALLOYS
MEAN-FIELD THEORY
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COBALT ADDITIONS
COBALT ALLOYS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIAGRAMS
HIGH-TC SUPERCONDUCTORS
IRON ADDITIONS
IRON ALLOYS
MEAN-FIELD THEORY
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES