Lattice vibrations of glasses

Measurements of the thermal conductivity of glasses have led to a model of their lattice vibrations. They are not described as waves, as they are in crystals, but as uncorrelated harmonic motions of individual atoms. The lattice vibrations of fully cerammed, crystalline glass ceramics have been foun...

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Bibliographic Details
Published inJournal of non-crystalline solids Vol. 352; no. 32-35; pp. 3363 - 3367
Main Author Pohl, R.O.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 15.09.2006
Elsevier
Subjects
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Glasses
Lattice dynamics
Physics
Thermal conductivity
Vibrational states in disordered systems
Glasses
Thermal conductivity
63.50.+x
65.60.+a
61.43.Fs
61.43.Fs; 63.50.+x; 65.60.+a
Glasses; Thermal conductivity
Einstein theory
Atomic displacements
Lattice dynamics
Vibrational modes
Glass
Glass ceramics
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Summary:Measurements of the thermal conductivity of glasses have led to a model of their lattice vibrations. They are not described as waves, as they are in crystals, but as uncorrelated harmonic motions of individual atoms. The lattice vibrations of fully cerammed, crystalline glass ceramics have been found to be either waves, as in crystals, or vibrations of individual atoms, as in glasses. The understanding of the cause for this different behavior has been aided by studies of systematically doped crystals.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2006.01.102