Raman scattering in MBa/sub 2/Cu/sub 3/O/sub 7/ with M = Y, Eu, and Gd: Effect of /sup 18/O substitution and oxygen vacancies on the Cu: O vibrational modes
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We have studied the Cu-O vibrations in the MBa/sub 2/Cu/sub 3/O/sub 7/ systems with M = Y, Eu and Gd by Raman spectroscopy. The observed Raman features are similar in the three systems. The four Raman bands in the 300--700 cm/sup -1/ frequency region exhibit isotopic shifts upon /sup 18/O substitution implying that these modes involve oxygen vibrations. In oxygen-deficient YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ samples prepared in the range 0
- Research Organization:
- ATandT Bell Laboratories, Murray Hill, New Jersey 07974
- OSTI ID:
- 5679811
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 36:16
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
OSCILLATION MODES
RAMAN SPECTRA
COPPER OXIDES
EUROPIUM OXIDES
GADOLINIUM OXIDES
YTTRIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
LOW TEMPERATURE
MEDIUM TEMPERATURE
ORTHORHOMBIC LATTICES
OXYGEN
OXYGEN 18
SUPERCONDUCTORS
TETRAGONAL LATTICES
TRANSITION TEMPERATURE
VACANCIES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELEMENTS
EUROPIUM COMPOUNDS
EVEN-EVEN NUCLEI
GADOLINIUM COMPOUNDS
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POINT DEFECTS
RARE EARTH COMPOUNDS
SPECTRA
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
OSCILLATION MODES
RAMAN SPECTRA
COPPER OXIDES
EUROPIUM OXIDES
GADOLINIUM OXIDES
YTTRIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
LOW TEMPERATURE
MEDIUM TEMPERATURE
ORTHORHOMBIC LATTICES
OXYGEN
OXYGEN 18
SUPERCONDUCTORS
TETRAGONAL LATTICES
TRANSITION TEMPERATURE
VACANCIES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELEMENTS
EUROPIUM COMPOUNDS
EVEN-EVEN NUCLEI
GADOLINIUM COMPOUNDS
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POINT DEFECTS
RARE EARTH COMPOUNDS
SPECTRA
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity