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Phys Rev Lett. 2006 Sep 29;97(13):135501. Epub 2006 Sep 25.

Effect of densification on the density of vibrational states of glasses.

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  • 1European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France.

Abstract

We studied the effect of densification on the vibrational dynamics of a Na(2)FeSi(3)O(8) glass. The density of vibrational states (DOS) has been measured using nuclear inelastic scattering. The corresponding changes in the microscopic, intermediate-range, and macroscopic properties have also been investigated. The results reveal that, in the absence of local structure transformations, the Debye level and the glass-specific excess of vibrational states above it have the same dependence on density, and the evolution of the DOS is fully described by the transformation of the elastic medium.

PMID:
17026042
[PubMed]
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