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Near-edge study of gold-substituted yba2cu3o(7-delta)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hepp, Aloysius F. Ruckman, Mark W. |
| Copyright Year | 1991 |
| Description | 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. |
| File Size | 444510 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910022663 |
| Archival Resource Key | ark:/13960/t21c6wk3j |
| Language | English |
| Publisher Date | 1991-09-01 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics Gold Neutron Diffraction Cyanides X Rays Valence Superconductors Materials Barium Oxides Oxidation Copper Copper Oxides Potassium Yttrium Oxides X Ray Absorption Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
