Fragile-to-strong transition and polyamorphism in the energy landscape of liquid silica

Details Fragile-to-strong transition and polyamorphism in the energy landscape of liquid silica Fragile-to-strong transition and polyamorphism in the energy landscape of liquid silica

2001-05-04

arxiv.org/abs/cond-mat/0105084v1

Physics

Condensed Matter

Materials Science

5 pages, 4 figures

Scientific paper

10.1038/35087524

We study the static and dynamic properties of liquid silica over a wide range of temperature T and density using computer simulations. The results reveal a change in the potential energy landscape as T decreases that underlies a transition from a fragile liquid at high T to a strong liquid at low T. We also show that a specific heat anomaly is associated with this fragile-to-strong transition, and suggest that this anomaly is related to the polyamorphic behaviour of amorphous solid silica.

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