Vibrational spectroscopy of LaBSiO5 glass and glass–crystal composites

Ir reflectivity and Raman scattering spectra of LaBSiO5 glass and glass-crystal composites were studied at 25-260 C. Using an analogy with the LaBGeO5 crystal, it was possible to assign the main spectral features of the LaBSiO5 glass and glass-crystal composites. The BO4 chain arrangement and the be...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2001-09, Vol.290 (2-3), p.224-230
Main Authors: Kratochvı́lová-Hrubá, I, Gregora, I, Pokorný, J, Kamba, S, Zikmund, Z, Petzelt, J, Čerňanský, M, Studnička, V, Sigaev, V.N, Smelyanskaya, E.N
Format: Article
Language:English
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Summary:Ir reflectivity and Raman scattering spectra of LaBSiO5 glass and glass-crystal composites were studied at 25-260 C. Using an analogy with the LaBGeO5 crystal, it was possible to assign the main spectral features of the LaBSiO5 glass and glass-crystal composites. The BO4 chain arrangement and the bending vibrations of SiO4 are influenced by the loss of the long-range order in the glass, whereas the stretching vibrations of the SiO4 groups are practically unaffected. Structural disorder in LaBSiO5 crystallites is caused by rotation of BO4 tetrahedra. 19 refs.
ISSN:0022-3093
DOI:10.1016/S0022-3093(01)00794-3