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research article
Melting and pressure-induced amorphization of quartz
1998
It has recently been shown that amorphization and melting of ice (O. MISHIMA, Nature, 384 (1996) 546) were intimately linked. In this letter, we infer from molecular-dynamics simulations on the SiO2 system that the extension of the alpha-quartz melting line in the metastable pressure-temperature domain is the pressure-induced amorphization line. It seems therefore likely that melting is the physical phenomenon responsible for pressure-induced amorphization. Moreover, we show that the structure of a "pressure glass" is similar to that of a very rapidly (10(13) to 10(14) kelvins per second) quenched thermal glass.
Type
research article
Web of Science ID
WOS:000074391300010
Authors
Publication date
1998
Published in
Volume
42
Start page
643
End page
648
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
September 29, 2011
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