FAST DYNAMICS OF GLASS-FORMING GLYCEROL STUDIED BY DIELECTRIC-SPECTROSCOPY

Authors
LUNKENHEIMER P PIMENOV A DRESSEL M GONCHAROV YG BOHMER R LOIDL A
Citation
P. Lunkenheimer et al., FAST DYNAMICS OF GLASS-FORMING GLYCEROL STUDIED BY DIELECTRIC-SPECTROSCOPY, Physical review letters, 77(2), 1996, pp. 318-321
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
2
Year of publication
1996
Pages
318 - 321
Database
ISI
SICI code
0031-9007(1996)77:2<318:FDOGGS>2.0.ZU;2-X
Abstract
Dielectric spectroscopy up to 370 GHz has been performed on supercoole d glycerol for temperatures between 250 and 330 K. The high-frequency dielectric loss, epsilon '', has been investigated by coherent-source submillimeter-wave spectroscopy. Special attention is given to the die lectric loss in the crossover regime from the structural relaxation to the far-infrared response. A minimum is observed in epsilon ''(nu) wh ich is compared to theoretical concepts that predict fast relaxational processes.