Near-edge study of gold-substituted YBa2Cu3O(7-delta)
Technical Report
·
OSTI ID:6008346
The valence of Cu and Au in YBa2Au0.3Cu2.7O7-delta was investigated using x-ray absorption near edge structure (XANES). X-ray and neutron diffraction studies indicate that Au goes on the Cu(1) site and Cu K-edge XANES shows that this has little effect on the oxidation state of the remaining copper. The Au L3 edge develops a white line feature whose position lies between that of trivalent gold oxide and monovalent potassium gold cyanide, and whose height relative to the edge step is smaller than in the two reference compounds. The appearance of the Au L3 edge suggests that fewer Au 3d states are involved in forming the Au-O bond in YBa2Au0.3Cu2.7O7-delta than in trivalent gold oxide.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
- DOE Contract Number:
- AC02-76CH00016; AS05-80ER10742
- OSTI ID:
- 6008346
- Report Number(s):
- N-91-31977; NASA-TM--105220; E--6509; NAS--1.15:105220
- Country of Publication:
- United States
- Language:
- English
Similar Records
XANES and EXAFS study of Au-substituted YBa2Cu3O(7-delta)
Near-edge study of gold-substituted YBa sub 2 Cu sub 3 O sub 7 minus. delta
XANES and EXAFS study of Au-substituted YBa sub 2 Cu sub 3 O sub 7 minus. delta
Conference
·
Sat Sep 01 00:00:00 EDT 1990
·
OSTI ID:6151620
Near-edge study of gold-substituted YBa sub 2 Cu sub 3 O sub 7 minus. delta
Journal Article
·
Thu Nov 14 23:00:00 EST 1991
· Journal of Applied Physics; (United States)
·
OSTI ID:5053153
XANES and EXAFS study of Au-substituted YBa sub 2 Cu sub 3 O sub 7 minus. delta
Conference
·
Sun Mar 31 23:00:00 EST 1991
· AIP Conference Proceedings (American Institute of Physics); (United States)
·
OSTI ID:5101788
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
GOLD ADDITIONS
GOLD ALLOYS
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VALENCE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
GOLD ADDITIONS
GOLD ALLOYS
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VALENCE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES