Frequency-dependent processes in dispersed systems of mesoscopic particles

Pelster, R; Galeczki, G; Nimtz, G; Pissis, P

dc.contributor.author	Pelster, R	en
dc.contributor.author	Galeczki, G	en
dc.contributor.author	Nimtz, G	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:08:22Z
dc.date.available	2014-03-01T01:08:22Z
dc.date.issued	1991	en
dc.identifier.issn	0022-3093	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10443
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026413651&partnerID=40&md5=c48c9c5ce5d2f4f39b927290249aa105	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Composite Materials - Components	en
dc.subject.other	Indium and Alloys	en
dc.subject.other	Relaxation Processes	en
dc.subject.other	Dielectric Function	en
dc.subject.other	Epofix Resin	en
dc.subject.other	Inter-Particle Hopping	en
dc.subject.other	Mesoscopic Particles	en
dc.subject.other	Polymer Matrices	en
dc.subject.other	Colloids	en
dc.title	Frequency-dependent processes in dispersed systems of mesoscopic particles	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	The frequency dependence between 100 Hz and 1 GHz and the temperature dependence of the complex dielectric function (DF) of heterostructures consisting of mesoscopic metal particles embedded in an insulating matrix have been investigated. By contrast with the situation above some GHz, where intra-particle processes dominate, at lower frequencies a separation of the DF into two contributions, from particles and from matrix, by means of an effective medium analysis, is not possible. The DF obeys the law epsilon" = epsilon' cotan(1/2-pi-eta) proportional nu-eta-1 with 0.8 less-than-or-equal-to eta < 1. Polarisation on the fractal metal-oil interface as well as inter-particle hopping may account for the observed behavior. Polymer matrices show weak relaxation processes, too.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Non-Crystalline Solids	en
dc.identifier.isi	ISI:A1991FV57400047	en
dc.identifier.volume	131-133	en
dc.identifier.issue	PART 1	en
dc.identifier.spage	238	en
dc.identifier.epage	241	en