Structural relaxation process in glass-forming liquids: a comparison between the optical Kerr effect and dielectric spectroscopy

Author: Prevosto D.   Bartolini P.   Torre R.   Capaccioli S.   Ricci M.   Taschin A.   Pisignano D.   Lucchesi M.  

Publisher: Taylor & Francis Ltd

ISSN: 1463-6417

Source: Philosophical Magazine B, Vol.82, Iss.5, 2002-03, pp. : 553-560

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Abstract

We present a comparative analysis of dielectric spectroscopy and optical Kerr effect measurements of relaxation processes in glass-forming phenyl glycidyl ether. In particular we focus our attention on the structural α-relaxation process and the most important finding is the existence of a constant scaling factor between the characteristic times obtained by the two experiments in the high-temperature region.