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Amorphous silica from the Rigid Unit Mode approach

Abstract:
We apply the Rigid Unit Mode model, which was initially developed for crystalline silicates, to the study of the flexibility of silica glass. Using a density-of-states approach we show that silica glass has the same flexibility against infinitesimal displacements of crystalline phases. Molecular dynamics simulations also show that parts of the silica structure are able to undergo large spontaneous changes through reorientations of the SiO4 tetrahedra with no energy cost.
Publication status:
Published

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Publisher copy:
10.1180/002646100549454

Authors


Hammonds, KD More by this author
Harris, MJ More by this author
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Journal:
MINERALOGICAL MAGAZINE
Volume:
64
Issue:
3
Pages:
377-388
Publication date:
2000-06-05
DOI:
EISSN:
1471-8022
ISSN:
0026-461X
URN:
uuid:e2a28f8f-67aa-42a6-a869-62151c242e50
Source identifiers:
389730
Local pid:
pubs:389730

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