High-energy X-ray Diffraction Study of La Co-ordination in Lanthanum Phosphate Glasses
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.
U. Hoppe et al., "High-energy X-ray Diffraction Study of La Co-ordination in Lanthanum Phosphate Glasses," Journal of Non-Crystalline Solids, Elsevier, Jan 2002.
The definitive version is available at http://dx.doi.org/10.1016/S0022-3093(01)00936-X
Materials Science and Engineering
Article - Journal
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