Raman spectroscopic investigation of superconducting YBa/sub 2/Cu/sub 3/O/sub 7//sub -//sub x/, semiconducting YBa/sub 2/Cu/sub 3/O/sub 6//sub +//sub x/, and possible impurity phases
Journal Article
·
· Appl. Phys. Lett.; (United States)
A Raman spectroscopic investigation of specimens of superconducting YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ and of the possible impurity phases YBa/sub 2/Cu/sub 3/O/sub 6+//sub x/ (semiconductor), Y/sub 2/BaCuO/sub 5/, Y/sub 2/Cu/sub 2/O/sub 5/, BaCuO/sub 2/, CuO, Y/sub 2/O/sub 3/, and BaCO/sub 3/ indicates that in the range 100--700 cm/sup -1/, there are six characteristic lines belonging to the superconductor. At 13 K, these lines are at 150, 338, 441, 507, 590, and 644 cm/sup -1/. Comparison of the Raman spectra of the superconductor and the semiconductor indicates a mode stiffening of the pair at 338 and 441 cm/sup -1/, but a mode softening of the pair at 507 and 590 cm/sup -1/. A factor group analysis leads to a tentative assignment of the Raman and infrared allowed modes.
- Research Organization:
- Solar Energy Research Institute, Golden, Colorado 80401
- OSTI ID:
- 5531253
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:3; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
EXPERIMENTAL DATA
IMPURITIES
INFORMATION
LASER SPECTROSCOPY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
RAMAN SPECTROSCOPY
SPECTROSCOPY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
EXPERIMENTAL DATA
IMPURITIES
INFORMATION
LASER SPECTROSCOPY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
RAMAN SPECTROSCOPY
SPECTROSCOPY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES