Local structure distortion in a YBa/sub 2-0. 52/Sr/sub 0. 52/Cu/sub 3/O/sub 7/ superconductor
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
X-ray-absorption fine structure has been used to study local structure distortions of a Sr-doped superconductor YBa/sub 2-//sub x/Sr/sub x/Cu/sub 3/O/sub 7-//sub delta/ with x = 0.52 and T/sub c/ = 95 K. Direct comparison with the undoped superconductor shows that the local structure around the Sr atoms, which are directly observed to substitute for Ba atoms, was found to be distorted significantly, with four oxygen atoms located at the Ba/Sr plane shifted towards Sr atoms by 0.14 A, and Sr shifted closer to the Cu(2) plane by 0.05 A. No significant changes are found for the local structures aroung Cu and Y atoms, which implies that the Cu(2) plane and CuO/sub 2/-Y-CuO/sub 2/ sandwich structure is preserved.
- Research Organization:
- Institute for Structural and Functional Studies, 3401 Market Street, Philadelphia, Pennsylvania 19104
- OSTI ID:
- 6553473
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Journal Issue: 4 Vol. 39:4; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:5047261
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FINE STRUCTURE
LOW TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SYNCHROTRON RADIATION
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
X-RAY SPECTRA
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FINE STRUCTURE
LOW TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SYNCHROTRON RADIATION
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
X-RAY SPECTRA
YTTRIUM COMPOUNDS
YTTRIUM OXIDES