Time-resolved optical Kerr effect on a fragile glass-forming liquid: Test of different mode coupling theory aspects

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2000 EDP Sciences
, , Citation R. Torre et al 2000 EPL 52 324 DOI 10.1209/epl/i2000-00442-2

0295-5075/52/3/324

Abstract

The dynamics of the fragile glass-forming liquid m-toluidine is investigated by time-resolved optical Kerr effect. A heterodyne detection technique allows to analyze the signal over four decades in time (10−13 s to 10−9 s), in the temperature range 250 K–295 K. The results of data analysis remarkably agree with the predictions of the idealised mode coupling theory (MCT). Some parameters related to that theory are here determined for the first time; also the material-dependent parameters λ = 0.77 ± 0.02 and Tc = 220 ± 5 K can be independently and consistently determined from three different dynamical regimes.

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10.1209/epl/i2000-00442-2