Volume 52, Number 3, November I 2000
|Page(s)||324 - 329|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Time-resolved optical Kerr effect on a fragile glass-forming liquid: Test of different mode coupling theory aspects
LENS, Università di Firenze - largo E. Fermi 2, I-50125, Firenze, Italy
2 INFM, Unità di Firenze - largo E. Fermi 2, I-50125, Firenze, Italy
3 Dipartimento di Chimica, Università della Basilicata - via N. Sauro 85, I-85100 and INFM, Unità di Napoli - Mostra d'Oltremare, pad. 20, I-80126, Napoli, Italy
4 LMDH, B.P. 86, Université P. et M. Curie - 4 place Jussieu, F-75005, Paris, France
Accepted: 12 September 2000
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 and can be independently and consistently determined from three different dynamical regimes.
PACS: 64.70.Pf – Glass transitions / 78.20.Jq – Electro-optical effects / 78.47.+p – Time resolved optical spectroscopies and other ultrafast optical measurements in condensed matter
© EDP Sciences, 2000
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