title: Effect of densification on the density of vibrational states of glasses.
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.
authors.affiliation: European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France.
authors.forename: A
authors.initials: A
authors.lastname: Monaco
authors.forename: A I
authors.initials: AI
authors.lastname: Chumakov
authors.forename: G
authors.initials: G
authors.lastname: Monaco
authors.forename: W A
authors.initials: WA
authors.lastname: Crichton
authors.forename: A
authors.initials: A
authors.lastname: Meyer
authors.forename: L
authors.initials: L
authors.lastname: Comez
authors.forename: D
authors.initials: D
authors.lastname: Fioretto
authors.forename: J
authors.initials: J
authors.lastname: Korecki
authors.forename: R
authors.initials: R
authors.lastname: Rüffer