Phonon-like dynamics in glasses: Coupling between damping and fragility (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Phonon-like dynamics in glasses: Coupling between damping and fragility (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Alternative label

• Bove, LE; Petrillo, C; Fontana, A; Ivanov, A; Dreyfus, C; Sokolov, AP (2006)
  Phonon-like dynamics in glasses: Coupling between damping and fragility
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Bove, LE; Petrillo, C; Fontana, A; Ivanov, A; Dreyfus, C; Sokolov, AP (literal)

Pagina inizio

• 16 (literal)

Pagina fine

• 22 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 385 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Roma La Sapienza, INFM, CRS, SOFT, I-00185 Rome, Italy; Univ Paris 06, IMPMC, F-75015 Paris, France; Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy; Univ Trent, Dipartimento Fis, I-38050 Trento, Italy; Inst Max Von Laue Paul Langevin, F-38100 Grenoble, France; Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA (literal)

Titolo

• Phonon-like dynamics in glasses: Coupling between damping and fragility (literal)

Abstract

• The high-frequency dynamics of two strong glasses, v-GeO2 and v-ZnCl2, were studied by means of inelastic neutron scattering experiments carried out with three triple-axis spectrometers in order to selectively access either a wide kinematic region or a high-energy resolution. The experimental spectra show well-defined dispersive acoustic excitations coexisting with non-dispersive waves. A thorough analysis of the inelastic line shape of longitudinal acoustic excitations provides estimates of the damping factors, which can be compared to the results of several earlier inelastic X-ray estimates for a wide class of inorganic glasses. A striking relation is observed between the microscopic damping of phonon-like modes in these glasses well below T-g and the fragility of the supercooled liquids approaching the glass transition, thus suggesting new means of investigation of the glass transition phenomenology. (c) 2006 Elsevier B.V. All rights reserved. (literal)

Prodotto di

• Materia soffice: Dinamica di non-equilibrio e complessita (MD.P02.014.001) (Modulo)
• Materia soffice: diffusione elastica ed anelastica di neutroni e raggi-x (MD.P02.016.001) (Modulo)

Autore CNR

• LIVIA ELEONORA BOVE (Persona)

Insieme di parole chiave

• Keywords of "Phonon-like dynamics in glasses: Coupling between damping and fragility" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• LIVIA ELEONORA BOVE (Persona)

Prodotto

• Materia soffice: Dinamica di non-equilibrio e complessita (MD.P02.014.001) (Modulo)
• Materia soffice: diffusione elastica ed anelastica di neutroni e raggi-x (MD.P02.016.001) (Modulo)

Insieme di parole chiave di

• Keywords of "Phonon-like dynamics in glasses: Coupling between damping and fragility" (Insieme di parole chiave)