Relaxation processes in a nonlinear optical polymer studied by AC dielectric spectroscopy and thermally stimulated depolarization current methods

Fedosov, SN; Sergeeva, AE; Pissis, P; Giacometti, JA

dc.contributor.author	Fedosov, SN	en
dc.contributor.author	Sergeeva, AE	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Giacometti, JA	en
dc.date.accessioned	2014-03-01T01:47:26Z
dc.date.available	2014-03-01T01:47:26Z
dc.date.issued	1998	en
dc.identifier.issn	12660167	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25213
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-18844441438&partnerID=40&md5=37c95ec69539aa34cb11c8ec424b43a9	en
dc.title	Relaxation processes in a nonlinear optical polymer studied by AC dielectric spectroscopy and thermally stimulated depolarization current methods	en
heal.type	journalArticle	en
heal.publicationDate	1998	en
heal.abstract	Dielectric properties of the guest-host PS/DR1 system has been studied by the AC dielectric spectroscopy method at frequencies from 1 Hz to 0.5 MHz and by the TSD current method from -160 to 07deg;C. The relaxation peaks at infra-low frequencies from 10-5 to 10-2 Hz were also calculated using Hamon's approximation. Three relaxation processes (β, γ and ρ) were identified from TSDC peaks, while the ε″(f) dependence showed a non-Debye α-peak narrowing with temperature. The activation energy of a relaxation appeared to be 2.57 eV, while that of the β process was 0.52 eV. Temperature dependence of the relaxation time agreed with the Williams-Landel-Ferry model. The ε″(f) peaks were fitted to Havriliak-Negami's expression and corresponding distribution parameters were obtained.	en
heal.journalName	Vide: Science, Technique et Applications	en
dc.identifier.issue	287 SUPPL.1	en
dc.identifier.spage	575	en
dc.identifier.epage	578	en