Dielectric hole burning: Signature of dielectric and thermal relaxation time heterogeneity

The effects of dielectric hole burning on the basis of the frequency dependent dielectric relaxation and specific heat of glycerol were discussed. A model which was capable of quantitatively reproducing the amplitudes, shapes and peak positions of observed dielectric holes was presented. The analysis showed that the frequency selective local heating of the modes of motion associated with the structural relaxation resulting from the dielectric loss fully accounted for the dielectric hole burning effects.