Cu K-edge study of (Tl[sub 0. 5]Pb[sub 0. 5])Sr[sub 2]Ca[sub 1[minus]x]Y[sub x]Cu[sub 2]O[sub 7[minus][delta]]
Conference
·
· International Journal of Modern Physics B
OSTI ID:6333792
- Sam Houston State Univ., Huntsville, TX (United States). Dept. of Physics
- National Taiwan Univ., Taipei (Taiwan, Province of China). Dept. of Chemistry
- Texas A and M Univ., College Station, TX (United States). Optical Imaging Lab.
Near-edge x-ray-absorption spectra at the Cu K-edge has been measured for (Tl[sub 0.5]Pb[sub 0.5])Sr[sub 2]Ca[sub 1[minus]x]Y[sub x]Cu[sub 2]O[sub 7[minus][delta]] compound series. It is found that both the intensity of the quadruple 1s [r arrow] 3d transition feature and the edge-energy decrease with increasing x. The results show that the Cu valence decreases slightly with the substitution of Ca[sup +2] by Y[sup +3]. This result, together with recent O K-edge result that the O-2p holes are reduced by the substitution, indicates that electronic charge is transferred into the entire CuO[sub 2] layers by the Y[sup +3] for Ca[sup +2] substitution.
- OSTI ID:
- 6333792
- Report Number(s):
- CONF-980291--
- Journal Information:
- International Journal of Modern Physics B, Journal Name: International Journal of Modern Physics B Vol. 12:29-31; ISSN IJPBEV; ISSN 0217-9792
- 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
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHARGE DISTRIBUTION
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
HOLES
LEAD COMPOUNDS
LEAD OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHARGE DISTRIBUTION
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
HOLES
LEAD COMPOUNDS
LEAD OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES