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Non network-former cations in oxide glasses spotted by Raman scattering

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Abstract

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.

Graphical abstract: Non network-former cations in oxide glasses spotted by Raman scattering

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Article information


Submitted
04 Feb 2020
Accepted
19 May 2020
First published
20 May 2020

Phys. Chem. Chem. Phys., 2020, Advance Article
Article type
Paper

Non network-former cations in oxide glasses spotted by Raman scattering

B. Hehlen and D. R. Neuville, Phys. Chem. Chem. Phys., 2020, Advance Article , DOI: 10.1039/D0CP00630K

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