Transformation of the vibrational spectrum and structure of glasses after quenching

Raman scattering and neutron diffraction and inelastic scattering spectra of well annealed and quenched As 2S 3 glasses are analyzed. It is found out that the quenching of the sample leads to negligible variation of structure on a short range scale, but significantly influence structural order on a...

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Bibliographic Details
Published in:Solid state communications 1993, Vol.86 (2), p.123-127
Main Authors: Isakov, S.L., Ishmaev, S.N., Malinovsky, V.K., Novikov, V.N., Parshin, P.P., Popov, S.N., Sokolov, A.P., Zemlyanov, M.G.
Format: Article
Language:English
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Summary:Raman scattering and neutron diffraction and inelastic scattering spectra of well annealed and quenched As 2S 3 glasses are analyzed. It is found out that the quenching of the sample leads to negligible variation of structure on a short range scale, but significantly influence structural order on a medium range scale. These structure modifications lead to significant changes in the low-energy (2–12 meV) vibrational spectrum: the density of vibrational states and light to vibration coupling constant increase uniformly along the spectrum. The results obtained confirm the connection of low-energy anomalies of the vibrational spectrum of amorphous materials with the peculiarities of their structure on the medium range scale.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(93)90934-F