Structural properties of α-quartz near the amorphous transition
- 24 December 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (26), 3309-3312
- https://doi.org/10.1103/physrevlett.65.3309
Abstract
Quartz undergoes a gradual transition with pressure from a crystalline to an amorphous state. The mechanism for this pressure-induced transition is not well understood. By combining new experimental pressure data and recently developed theoretical methods, we have determined the structural properties of α-quartz near and above this transition. We suggest that highly unfavorable interpolyhedral anion-anion distances, which occur at the transition pressure, play a key role in driving the transition.Keywords
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