Oxygen stoichiometry, disordering, and the orthorhombic-to-tetragonal transition in YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
A mean-field theory for oxygen unloading and disordering is presented as a model for the orthorhombic-to-tetragonal (OT) transition in YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/. The results successfully match the stoichiometry and ordering measured by thermal gravimetry and neutron powder diffraction structural refinements. The O(1) or O(5) site energy at infinite dilution is found to be -3.73 eV. The O(1)-O(5) interaction energy is 0.09 +- 0.003 eV and the twin plane energy estimated to be 2.2 x 10/sup -2/ J/m/sup 2/.
- Research Organization:
- Department of Materials, Imperial college, London SW7 2BP, United Kingdom
- OSTI ID:
- 6553484
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:4; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Oxygen ordering and the orthorhombic-to-tetragonal phase transition in YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/
Journal Article
·
Thu Oct 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6393309
Resistance measurements and oxygen out-diffusion near the orthorhombic-tetragonal phase transformation in single-crystal YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
·
Mon Dec 31 23:00:00 EST 1990
· Physical Review, B: Condensed Matter; (USA)
·
OSTI ID:6073345
Oxygen ordering and the orthorhombic-to-tetragonal phase transition in YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/
Journal Article
·
Tue Sep 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6231376
Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BINDING ENERGY
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
ELEMENTS
ENERGY
NEUTRON DIFFRACTION
NONMETALS
ORDER-DISORDER TRANSFORMATIONS
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SCATTERING
STOICHIOMETRY
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BINDING ENERGY
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
ELEMENTS
ENERGY
NEUTRON DIFFRACTION
NONMETALS
ORDER-DISORDER TRANSFORMATIONS
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SCATTERING
STOICHIOMETRY
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES