Negative temperature coefficient thermistor based on Bi3Zn2Sb3O14 ceramic: An oxide semiconductor at high temperature

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dc.contributor.authorNobre, MAL
dc.contributor.authorLanfredi, S.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:26:56Z
dc.date.available2014-05-20T15:26:56Z
dc.date.issued2003-04-07
dc.description.abstractBi1.5ZnSb1.5O7 dielectric ceramic with pyrochlore structure was investigated by impedance spectroscopy from 400 to 750 degreesC. Pyrochlore was synthesized by the polymeric precursor method, a chemical synthesis route derived from Pechini's method. The grain or bulk resistance exhibits a sensor temperature characteristic, being a thermistor with a negative temperature coefficient (NTC). Only a single region was identified on the resistance curve investigated. The NTC thermistor characteristic parameter (beta) is equal to 7140 degreesC, in the temperature range investigated. The temperature coefficient of the resistance (alpha) was derived, being equal to -4.46x10(-2) degreesC(-1) at 400 degreesC. The conduction mechanism and relaxation are discussed. (C) 2003 American Institute of Physics.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Fac Ciências & Tecnol, BR-19060900 Presidente Prudente, SP, Brazil
dc.format.extent2284-2286
dc.identifierhttp://dx.doi.org/10.1063/1.1566458
dc.identifier.citationApplied Physics Letters. Melville: Amer Inst Physics, v. 82, n. 14, p. 2284-2286, 2003.
dc.identifier.doi10.1063/1.1566458
dc.identifier.fileWOS000182018800030.pdf
dc.identifier.issn0003-6951
dc.identifier.lattes7201928600704530
dc.identifier.urihttp://hdl.handle.net/11449/37003
dc.identifier.wosWOS:000182018800030
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofApplied Physics Letters
dc.relation.ispartofjcr3.495
dc.relation.ispartofsjr1,382
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleNegative temperature coefficient thermistor based on Bi3Zn2Sb3O14 ceramic: An oxide semiconductor at high temperatureen
dc.typeArtigo
dcterms.licensehttp://publishing.aip.org/authors/web-posting-guidelines
dcterms.rightsHolderAmer Inst Physics
unesp.author.lattes7201928600704530
unesp.author.orcid0000-0003-4843-3975[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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Artigos - Física, Química e Biologia - FCT