Origin of the high-frequency contributions to the dielectric loss in supercooled liquids.
Dielectric loss spectra of four different glass formers revealing either beta relaxation or excess wing are presented. We compare the effect of pressure and temperature on the mentioned processes. Our findings suggest that the excess wing and the beta relaxation cannot be treated on the same footing.
Hensel-Bielowka
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Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland.
Paluch
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