Non network-former cations in oxide glasses spotted by Raman scattering
| Autor: | Bernard Hehlen, Daniel R. Neuville |
|---|---|
| Přispěvatelé: | Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Oxide General Physics and Astronomy chemistry.chemical_element 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 01 natural sciences Oxygen [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry symbols.namesake chemistry.chemical_compound Crystallography chemistry Polymerization Aluminosilicate 0103 physical sciences Tetrahedron symbols Physical and Theoretical Chemistry 010306 general physics 0210 nano-technology Ternary operation Raman spectroscopy Raman scattering |
| Zdroj: | Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2020, 22 (22), pp.12724-12731. ⟨10.1039/d0cp00630k⟩ |
| ISSN: | 1463-9076 1463-9084 |
| Popis: | International audience; The depolarized Raman spectra can be used as a probe to reveal the presence of non-network formers in oxide glasses. Two spectral responses involving the cations are observed below 400 cm−1 in more than 30 compositions of binary and ternary aluminosilicates. One of the two bands arises solely from cations close to non-bridging oxygen providing thereby a simple test for qualifying the polymerization state of the glass. The second feature involves all cations whatever their role in the glass and is found to be twofold: one contribution arises from cations charge compensating (AlO4)− tetrahedra and the other one from network modifier cations. These results confirm the net vibrational contrast of cations depending on their structural surrounding. |
| Databáze: | OpenAIRE |
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