Dielectric properties of Na1-xLixNbO3 ceramics from powders obtained by chemical synthesis

dc.contributor.authorFranco, RCR
dc.contributor.authorCamargo, E. R.
dc.contributor.authorNobre, MAL
dc.contributor.authorLeite, E. R.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T15:26:18Z
dc.date.available2014-05-20T15:26:18Z
dc.date.issued1999-01-01
dc.description.abstractUltra-fine powders of Na1-xLixNbO3 (x=0; 0.06; 0.09; 0.12) were synthesized by the Polymeric Precursors Method. Such powders had their orthorhombic structures determined by X-ray diffraction and their surface area determined by BET isotherms (less than 10 m(2) g(-1)). Densification was followed by dilatometric study. The powders, calcined at 700 degrees C for 5 h, were sintered at 1290 degrees C during 2 h under ambient atmosphere with no application of extra pressure. The samples with relative densities higher than 95% were analyzed by impedance spectroscopy at room temperature, under a signal amplitude of 1 V-rms. Dielectric constants of about 180 and dielectric loss factor of about 0.03 were measured showing small dependence with frequency. The electrical properties were similar to those obtained for samples sintered by hot pressing. (C) 1999 Elsevier B.V. Limited and Techna S.r.l. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Inst Quim, BR-14801970 São Paulo, Brazil
dc.description.affiliationUniv Fed Sao Carlos, UFSCar, Dept Quim, Lab Interdisciplinar Electroquim & Ceram, BR-13565905 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, BR-14801970 São Paulo, Brazil
dc.format.extent455-460
dc.identifierhttp://dx.doi.org/10.1016/S0272-8842(98)00054-6
dc.identifier.citationCeramics International. Oxford: Elsevier B.V., v. 25, n. 5, p. 455-460, 1999.
dc.identifier.doi10.1016/S0272-8842(98)00054-6
dc.identifier.issn0272-8842
dc.identifier.urihttp://hdl.handle.net/11449/36481
dc.identifier.wosWOS:000081144900008
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofCeramics International
dc.relation.ispartofjcr3.057
dc.relation.ispartofsjr0,784
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectsodium and lithium niobatept
dc.subjectpolymeric precursorspt
dc.subjectdielectricpt
dc.titleDielectric properties of Na1-xLixNbO3 ceramics from powders obtained by chemical synthesisen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0003-4843-3975[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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