TITLE

Molecular Dynamics Simulations of “The Cooperativity Blockage Effect” in Alkali Metasilicate

AUTHOR(S)
Habasaki, J.; Ngai, K.L.; Hiwatari, Y.
PUB. DATE
April 2004
SOURCE
AIP Conference Proceedings;2004, Vol. 708 Issue 1, p775
SOURCE TYPE
Conference Proceeding
DOC. TYPE
Article
ABSTRACT
Molecular dynamics simulations were carried out at 700 K in single alkali and mixed alkali metasilicate glasses to reproduce the dramatic mixed alkali effect occurring in the dilute foreign alkali region. Both small numbers of frozen ions and another kind of alkali appears to immobilize a large number of host ions as previously found in experiment. This large number can now be rationalized as being due to blockage by the less mobile foreign ions of the cooperative ion dynamics that originate from ion-ion interaction and correlation. © 2004 American Institute of Physics
ACCESSION #
13423712

 

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