Structure and dynamics of sodium disilicate

Authors
Horbach, J Kob, W
Citation
J. Horbach et W. Kob, Structure and dynamics of sodium disilicate, PHIL MAG B, 79(11-12), 1999, pp. 1981-1986
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICSELECTRONIC OPTICAL AND MAGNETIC PROPERTIES
ISSN journal
13642812 → ACNP
Volume
79
Issue
11-12
Year of publication
1999
Pages
1981 - 1986
Database
ISI
SICI code
1364-2812(199911/12)79:11-12<1981:SADOSD>2.0.ZU;2-
Abstract
The structure and dynamics of sodium disilicate are studied by molecular dy namics computer simulation. The structure is described by a partially destr oyed tetrahedral SiO4 network and a spherical superstructure formed by the silicon and sodium atoms. The static structure factor of this simulation is in very good agreement with one from a neutron scattering experiment. For 1008 particles there are strong finite size effects in the dynamics which a re due to the absence of modes contributing to the boson peak.