Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate

Cajkovski, T; Davidovic, M; Pissis, P; Polizos, G; Cajkovski, D; Likar-Smiljanic, V; Biljic, R; Nedic, Z; Mioc, UB

dc.contributor.author	Cajkovski, T	en
dc.contributor.author	Davidovic, M	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Polizos, G	en
dc.contributor.author	Cajkovski, D	en
dc.contributor.author	Likar-Smiljanic, V	en
dc.contributor.author	Biljic, R	en
dc.contributor.author	Nedic, Z	en
dc.contributor.author	Mioc, UB	en
dc.date.accessioned	2014-03-01T02:42:14Z
dc.date.available	2014-03-01T02:42:14Z
dc.date.issued	2003	en
dc.identifier.issn	0167-2738	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30883
dc.subject	Heteropolyacid salts	en
dc.subject	Permittivity measurements	en
dc.subject	Protonic conductivity	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Copper	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Permittivity	en
dc.subject.other	Tungsten compounds	en
dc.subject.other	Protonic conductivity	en
dc.subject.other	Inorganic acids	en
dc.title	Dielectric investigation of electrical conductivity in the copper salt of the 12-tungstophosphoric acid hydrate	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/S0167-2738(03)00233-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0167-2738(03)00233-9	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	The electrical and dielectric properties of the copper salt of 12-tungstophosphoric acid (WPA) hydrate have been investigated by broadband dielectric relaxation spectroscopy (DRS). This work is a continuation of our previous investigations on the influence of monovalent and bivalent cations on the dielectric properties of WPA hydrates salts. Measurements were made in the frequency range 10 mHz-1 MHz in order to explore the long-range dynamics, following recent microwave measurements aiming at the local dynamics properties. Experiments were done in the temperature interval 293-350 K. Data treatment included complex permittivity epsilon, complex electric modulus M and complex impedance Z* formalism, Arrhenius diagram and Cole-Cole diagrams. The results are discussed in terms of conductivity relaxation and conductivity current relaxation. Rather long conductivity relaxation times measured seem to correspond to ion jumping processes. A phase transition was observed at 323 K. (C) 2003 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Solid State Ionics	en
dc.identifier.doi	10.1016/S0167-2738(03)00233-9	en
dc.identifier.isi	ISI:000186197100029	en
dc.identifier.volume	162-163	en
dc.identifier.spage	203	en
dc.identifier.epage	208	en