Vibrational spectroscopy of LaBSiO5 glass and glass–crystal composites
| Autor: | Jan Pokorný, Ivan Gregora, Jan Petzelt, I Kratochvı́lová-Hrubá, Stanislav Kamba, Z. Zikmund, E. N. Smelyanskaya, V. Studnička, M Čerňanský, Vladimir N. Sigaev |
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| Rok vydání: | 2001 |
| Předmět: |
Borosilicate glass
Chemistry Infrared spectroscopy Atmospheric temperature range Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Crystal symbols.namesake law Molecular vibration Materials Chemistry Ceramics and Composites symbols Crystallite Crystallization Composite material Raman spectroscopy |
| Zdroj: | Journal of Non-Crystalline Solids. 290:224-230 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/s0022-3093(01)00794-3 |
| Popis: | Infrared (IR) reflectivity and Raman scattering spectra of LaBSiO 5 glass and glass–crystal composites were studied in the temperature range 25–260 °C. Using an analogy with the LaBGeO 5 crystal it was possible to assign the main spectral features of the LaBSiO 5 glass and glass–crystal composites. The BO 4 chain arrangement and the bending vibrations of SiO 4 are influenced by the loss of the long-range order in the glass whereas the stretching vibrations of the SiO 4 groups are practically unaffected. The structural disorder in LaBSiO 5 crystallites is caused by rotation of BO 4 tetrahedra. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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