A. Girard, Y. Dělugeard, L. Pichon
Sep 1, 1992
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0
Influential Citations
8
Citations
Journal
Journal De Physique I
Abstract
A Raman scattering study of p-quaterphenyl is reported as function of temperature and pressure. At atmospheric pressure, a line broadening in the vicinity of the transition gives a direct support of the order-disorder mechanism. The phase diagram has been determined. The mechanism of the transition is analysed up to 4 kbar and shows an evolution towards a displacive regime, the transition remaining continuous.