TITLE

Structural and dynamical heterogeneity in molten Si-rich oxides

AUTHOR(S)
Wu, S. Q.; Wang, C. Z.; Zhu, Z. Z.; Ho, K. M.
PUB. DATE
January 2010
SOURCE
Applied Physics Letters;1/25/2010, Vol. 96 Issue 4, p043121
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ab initio molecular dynamics simulations are performed to study the structural and dynamical properties of molten Si oxides. Segregation of SiOy (y<2) and pure Si network are clearly observed in the Si-rich oxide liquids. The size of Si-aggregate regions increases with increasing Si composition. The dynamical properties of the Si atoms with different local environments are different due to the “oxygen slowing-down” effect. This structural and dynamical heterogeneity is consistent with previous experimental studies, and provides useful insight into the role of the Si oxide shell in the oxide-assisted growth of Si nanowires.
ACCESSION #
47807416

 

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