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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/31931
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dc.contributor.authorNobre, MAL-
dc.contributor.authorLanfredi, S.-
dc.date.accessioned2014-05-20T15:20:41Z-
dc.date.accessioned2016-10-25T17:53:51Z-
dc.date.available2014-05-20T15:20:41Z-
dc.date.available2016-10-25T17:53:51Z-
dc.date.issued2003-10-13-
dc.identifierhttp://dx.doi.org/10.1063/1.1618016-
dc.identifier.citationApplied Physics Letters. Melville: Amer Inst Physics, v. 83, n. 15, p. 3102-3104, 2003.-
dc.identifier.issn0003-6951-
dc.identifier.urihttp://hdl.handle.net/11449/31931-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/31931-
dc.description.abstractThe electric properties of the sodium niobate perovskite ceramic were investigated by impedance spectroscopy in the frequency range from 5 Hz to 13 MHz and from room temperature up to 1073 K, in a thermal cycle. Both capacitance and conductivity exhibit an anomaly at around 600 K as a function of the temperature and frequency. The electric conductivity as a function of angular frequency sigma(omega) follows the relation sigma(omega)=Aomega(s). The values of the exponent s lie in the range 0.15less than or equal tosless than or equal to0.44. These results were discussed considering the conduction mechanism as being a type of polaron hopping. (C) 2003 American Institute of Physics.en
dc.format.extent3102-3104-
dc.language.isoeng-
dc.publisherAmerican Institute of Physics (AIP)-
dc.sourceWeb of Science-
dc.titleac conductivity and conduction mechanism of NaNbO3 semiconductor antiferroelectric ceramic: A relaxational approach at high temperatureen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Paulista, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil-
dc.identifier.doi10.1063/1.1618016-
dc.identifier.wosWOS:000185832400038-
dc.rights.accessRightsAcesso restrito-
dc.identifier.fileWOS000185832400038.pdf-
dc.relation.ispartofApplied Physics Letters-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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