Pb LIII-edge EXAFS and XANES analyses on the structural environment of lead in PbO-Ga2O3 glasses
SCIE
SCOPUS
- Title
- Pb LIII-edge EXAFS and XANES analyses on the structural environment of lead in PbO-Ga2O3 glasses
- Authors
- Choi, YG; Kim, KH; Chernov, VA; Heo, J
- Date Issued
- 1999-04
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Pb LIII-edge absorption spectra of PbO-Ga2O3 glasses were analyzed and the local environment of lead in glasses was proposed. A single-shell fitting of Pb LIII-edge EXAFS (extended X-ray absorption fine structure) spectra of three PbO-Ga2O3 glasses showed that the Pb-O bond distances were between 0.229 and 0.231 nm with the oxygen coordination numbers between 3.3 and 3.5. Comparison of the absorption peaks in the pre-edge region of the Pb LIII-edge XANES (X-ray absorption near edge structure)spectra between glasses and other reference crystals indicated that the Pb2+ ions form either PbO3 or PbO4 polyhedra, These polyhedra are connected through either two- or three-coordinated oxygens similar to the configuration in PbSiO3 crystal. (C) 1999 Elsevier Science B.V. All rights reserved.
- Keywords
- ABSORPTION FINE-STRUCTURE; METAL OXIDE GLASSES; PBO-BI2O3-GA2O3 GLASSES; SILICATE-GLASSES; NEAR-EDGE; RAY; COORDINATION; SPECTROSCOPY; SPECTRA; STATES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/20425
- DOI
- 10.1016/S0022-3093(99)00010-1
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 246, no. 1-2, page. 128 - 135, 1999-04
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