Analysis of two-dimensional energy and relaxation-time distributions from temperature-dependent broadband dielectric spectroscopy

Pelster, R; Kruse, T; Krauthauser, HG; Nimtz, G; Pissis, P

dc.contributor.author	Pelster, R	en
dc.contributor.author	Kruse, T	en
dc.contributor.author	Krauthauser, HG	en
dc.contributor.author	Nimtz, G	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:13:35Z
dc.date.available	2014-03-01T01:13:35Z
dc.date.issued	1998	en
dc.identifier.issn	0163-1829	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12580
dc.subject	Activation Energy	en
dc.subject	Dielectric Spectroscopy	en
dc.subject	Polymer Blend	en
dc.subject	Relaxation Time	en
dc.subject	Sampling Technique	en
dc.subject	Temperature Dependence	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	SPECTRA	en
dc.subject.other	PARAMETERS	en
dc.subject.other	INVERSION	en
dc.title	Analysis of two-dimensional energy and relaxation-time distributions from temperature-dependent broadband dielectric spectroscopy	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.57.8763	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.57.8763	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	We present a method to determine the two-dimensional 2D distribution G(W,ln tau(o)) of the relaxation time tau=tau(o)exp(W/k(B)T) using an inversion of temperature-dependent broadband dielectric data. In contrast to the usual evaluation of 1D distributions g(tau), the 2D analysis reveals whether the broadening of a relaxation peak has its physical origins in a variation of the activation energy W, or the preexponential factor tau(o), or both. A study of the beta relaxation of a polymer blend demonstrates the validity of the analysis. We compare the distribution obtained from dielectric ac data (5 Hz-300 MHz, 100 K-300 K) with the results of a thermally stimulated depolarization currents sampling technique. The contour line of G(W,ln tau(o)) is shown to follow the compensation law. [S0163-1829(98)05815-9].	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.57.8763	en
dc.identifier.isi	ISI:000073219900007	en
dc.identifier.volume	57	en
dc.identifier.issue	15	en
dc.identifier.spage	8763	en
dc.identifier.epage	8766	en