Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 19, Issue 20, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/19/20/205117
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A glass is usually formed by cooling a liquid at a rate sufficient to avoid crystallization. In the vicinity of the glass transition the structural relaxation time increases with lowering temperature in a non-Arrhenius fashion and the structural relaxation function reveals a non-Debye behaviour. However, liquid can be also vitrified by keeping it at a constant temperature and increasing the pressure. This pressure-induced transition to the glassy state is also accompanied by dramatic changes in the relaxation dynamics. Herein we discuss the behaviour of the structural relaxation times of glass-forming liquids and polymer melts under high pressure.
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