Published March 1996
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Effects of higher-coordination shells in garnets detected by XAS at the Al K-edge
- 1. Istituto Nazionale di Fisica Nucleare, Frascati (Italy). Lab. Nazionale di Frascati
- 2. CNRS UMR 110, Laboratoire de Chimie des Solides, Nantes Cedex (France). Institut de materiaux de Nantes
- 3. Rome Univ. 3 (Italy). Dipt. di Scienze Geologiche
- 4. Camerino Univ. (Italy). Dipt. di Scienze della Terra
- 5. Univ. Bayreuth, Bayreuth (Germany). Bayerisches Geoinstitut
Description
The aluminium 1 s x-ray-absorption spectra of a series of garnets, pyrope, almandine, spessartine and grossular, are compared to full multiple-scattering calculation using cluster models. An overall good agreement between experiment and calculation, extended also to the edge region,is obtained in the energy range in up to 60 e V above the threshold, provided cluster containing at least 40 atoms are used. The analysis of these garnet XAS spectra provides clear evidence on the effect of probe, XANES spectroscopy at the edge of low Z elements appears to be a perfect tool to investigate the role played by atoms located in higher-coordination shells
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Additional details
Publishing Information
- Imprint Pagination
- 13 p.
- Report number
- LNF-P--96-015
INIS
- Country of Publication
- Italy
- Country of Input or Organization
- Italy
- INIS RN
- 28044567
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ALUMINIUM; CLUSTER MODEL; MULTIPLE SCATTERING; X-RAY SPECTROSCOPY
- Descriptors DEC
- ELEMENTS; MATHEMATICAL MODELS; METALS; NUCLEAR MODELS; SCATTERING; SPECTROSCOPY