Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Solid state phenomena
Vol. 139 (Apr. 2008), p. 101-106
ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The structural properties of SiO2 liquid during cooling have been investigated bymolecular dynamics simulations. The interatomic forces acting on the particles are calculated by themodified Tersoff potential parameters. The glass transition temperature and structural properties ofthe resulting SiO2 system at various temperatures have been investigated. The fivefoldcoordinations of Si and threefold coordinations of O atoms were observed, and the coordinationdefects of system decrease with decreasing temperature up to 17 % at 300 K. The self-diffusioncoefficients for Si and O atoms drop to almost zero below 3000 K. The structures were distorted athigh temperatures, but very stable atomic network persisted up to high temperature in the liquidstate
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.139.101.pdf
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