Abstract
Differences in La co-ordination environments indicated in the structures of rare earth-phosphate crystals in glasses with compositions ranging from ultraphosphate to metaphosphate stoichiometries were investigated. A series of lanthanum phosphate glasses were characterized by X-ray diffraction analysis and a change of the La-O co-ordination number was extracted by Gaussian fitting of the first-neighbor distances. The decrease in co-ordination number was due to the transition of ultraphosphate glass structures to metaphosphate structures. The changes in the La environments explained the compositional dependence of glass properties.
Original language | English |
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Pages (from-to) | 263-274 |
Number of pages | 12 |
Journal | Journal of Non-Crystalline Solids |
Volume | 297 |
Issue number | 2-3 |
DOIs | |
State | Published - Feb 2002 |
Externally published | Yes |
Funding
The participants from the University of Missouri-Rolla acknowledge the donors of The Petroleum Research Fund, administered by the American Chemical Society, for support of this research.