Electrical conductivity of the ceramic compounds VNb9O25 and VTa9O25

Amountza, A; Riza, F; Kasselouri, V

dc.contributor.author	Amountza, A	en
dc.contributor.author	Riza, F	en
dc.contributor.author	Kasselouri, V	en
dc.date.accessioned	2014-03-01T01:18:56Z
dc.date.available	2014-03-01T01:18:56Z
dc.date.issued	2003	en
dc.identifier.issn	0167577X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15267
dc.subject	Ceramics	en
dc.subject	Electrical conductivity	en
dc.subject	Electrical properties	en
dc.subject	Sol-gel preparation	en
dc.subject	VNb9O25	en
dc.subject	VTa9O25	en
dc.subject.other	Ceramic materials	en
dc.subject.other	Electric conductivity measurement	en
dc.subject.other	Microstructure	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Sol-gels	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Semiconductive areas	en
dc.subject.other	Vanadium compounds	en
dc.title	Electrical conductivity of the ceramic compounds VNb9O25 and VTa9O25	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0167-577X(02)01215-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0167-577X(02)01215-6	en
heal.publicationDate	2003	en
heal.abstract	The aim of this work is to study the electrical conductivity of the ceramic compounds VNb9O25 and VTa9O25. The compounds were prepared by three different methods: the co-grinding process, the sol-gel process using oxides (V2O5, Nb2O5 or Ta2O5) as precursors, and the sol-gel process using alkoxides (VO(OC2H5)3, Nb(OC2H5)5 or Ta(OC2H5)5). The formed compounds were characterised by X-ray diffraction (XRD) measurements and scanning electron microscopy (SEM) analyses, while electrical conductivity measurements were conducted with the four-point DC method. Results indicated that all samples lay in the semiconductive area and differences in electrical conductivity values were observed depending on the preparation method and the microstructure of the sample. © 2002 Elsevier Science B.V. All rights reserved.	en
heal.journalName	Materials Letters	en
dc.identifier.doi	10.1016/S0167-577X(02)01215-6	en
dc.identifier.volume	57	en
dc.identifier.issue	15	en
dc.identifier.spage	2298	en
dc.identifier.epage	2304	en