Structure refinements of superconducting Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ and Tl/sub 2/Ba/sub 2/Cu/sub 3/O/sub 10/ from neutron diffraction data
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The structures of Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ and Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ were refined from neutron-powder-diffraction data. The data for Tl/sub 2/Ba/sub 2/CaCu/sub 2/O/sub 8/ were taken at 298 K, and the data for Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ were obtained at both 150 and 13 K. The results are essentially in agreement with the structural refinements based on single-crystal x-ray-diffraction data and confirm the positional disorder of the oxygen atoms in the Tl-O planes. The low-temperature refinements for Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ indicate that the symmetry remains tetragonal down to 13 K and that there is no significant structural change or discontinuity in the cell parameters through the superconducting critical temperature near 125 K.
- Research Organization:
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973
- OSTI ID:
- 7090370
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:10; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Synthesis and properties of polycrystalline Tl sub 2 Ba sub 2 CaCu sub 2 O sub x and Tl sub 2 Ba sub 2 Ca sub 2 Cu sub 3 O sub x
Journal Article
·
Thu Aug 15 00:00:00 EDT 1991
· Journal of Applied Physics; (United States)
·
OSTI ID:5411884
Metalorganic chemical vapor deposition of Tl sub 2 Ba sub 2 CaCu sub 2 O sub x superconducting thin films using fluorinated. beta. -diketonate source reagents
Journal Article
·
Sun Nov 11 23:00:00 EST 1990
· Applied Physics Letters; (USA)
·
OSTI ID:6290648
Synthesis and properties of polycrystalline Tl sub 2 Ba sub 2 CaCu sub 2 O sub x and Tl sub 2 Ba sub 2 Ca sub 2 Cu sub 3 O sub x
Conference
·
Sun Dec 31 23:00:00 EST 1989
·
OSTI ID:7108897
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ATOMS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
LOW TEMPERATURE
MEDIUM TEMPERATURE
NEUTRON DIFFRACTION
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYCRYSTALS
SCATTERING
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VERY LOW TEMPERATURE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ATOMS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
LOW TEMPERATURE
MEDIUM TEMPERATURE
NEUTRON DIFFRACTION
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYCRYSTALS
SCATTERING
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VERY LOW TEMPERATURE