FT-Raman spectra of isotope-enriched boron carbide
| Autor: | G.G. Esadze, Heinz Wilhelm Rotter, Falko D. Meyer, T.G. Abzianidze, Harald Hillebrecht, S.O. Shalamberidze, H. Werheit |
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| Rok vydání: | 2004 |
| Předmět: |
Isotope
Phonon Analytical chemistry Boron carbide Condensed Matter Physics Spectral line Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound symbols.namesake chemistry Kinetic isotope effect Homogeneity (physics) Materials Chemistry Ceramics and Composites symbols Physical and Theoretical Chemistry Spectroscopy Raman spectroscopy |
| Zdroj: | Journal of Solid State Chemistry. 177:569-574 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2003.04.004 |
| Popis: | For some boron-rich solids, in particular boron carbide, it is proved that FT-Raman spectroscopy yields reliable spectra of the Raman-active phonons, while the conventional Raman spectra are strongly influenced by the surface properties of the samples, and hence they are less suitable to detect the bulk properties of these solids. The FT-Raman spectra of 10B, 11B, and 13C isotope-enriched boron carbide of compositions B4.3C, B6.5C, and B10C have been measured in completion to the recently published IR-Phonon spectra of the same samples. Considering the description of movement of atoms in specific Raman-active modes determined by Shirai and Emura, the spectra are evaluated and discussed with respect to the composition-dependent concentrations of structural elements like B12 and B11C icosahedra, CBC, CBB, and CCC chains within the homogeneity range. Most of the Raman bands can be attributed to specific lattice vibrations. |
| Databáze: | OpenAIRE |
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