Impedance spectroscopy of SnO2: CoO during sintering

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dc.contributor.authorMUCCILLO, R.
dc.contributor.authorCERRI, J.A.
dc.contributor.authorLEITE, E.R.
dc.contributor.authorLONGO, E.
dc.contributor.authorVARELA, J.A.
dc.coverageInternacionalpt_BR
dc.date.accessioned2016-09-27T13:05:12Z
dc.date.available2016-09-27T13:05:12Z
dc.date.issued1997pt_BR
dc.description.abstractSnO2 : m mol% Co0 (0.5 <= m <= 6.0) ceramic specimens were studied by impedance spectroscopy in the 5 Hz-13 MHz frequency range during heating cold-pressed specimens from room temperature to 1250°C. The electrical resistivity during sintering decreases from 4 to 6 orders of magnitude in the 400-1.500 K temperature range depending on the amount of COO. An increase in electrical resistivity in the 570-670 K range is related to the release of adsorbed water. The results for the 970-1500 K show that the higher the amount of the Co0 addition, the lower is the temperature at which SnO, : Co0 reaches a minimum electrical rlzsistivity. This suggests that oxygen point defects created by dissolution of cobalt ions in the SnO, lattice are controlling the densification rate of these ceramics.pt_BR
dc.format.extent125-130pt_BR
dc.identifier.citationMUCCILLO, R.; CERRI, J.A.; LEITE, E.R.; LONGO, E.; VARELA, J.A. Impedance spectroscopy of SnO2: CoO during sintering. <b>Materials Letters</b>, v. 30, n. 1, p. 125-130, 1997. DOI: <a href="https://dx.doi.org/10.1016/S0167-577X(97)80001-8">10.1016/S0167-577X(97)80001-8</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/26720.
dc.identifier.doi10.1016/S0167-577X(97)80001-8pt_BR
dc.identifier.fasciculo1pt_BR
dc.identifier.issn0167-577Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8598-279X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/26720
dc.identifier.vol30pt_BR
dc.relation.ispartofMaterials Letterspt_BR
dc.rightsopenAccesspt_BR
dc.subjecttin oxides
dc.subjectcobalt oxides
dc.subjectelectric conductivity
dc.subjectspectroscopy
dc.subjectdilatometry
dc.subjectsintering
dc.subjectceramics
dc.subjectdoped materials
dc.subjectimpedance
dc.subjectmaterials testing
dc.titleImpedance spectroscopy of SnO2: CoO during sinteringpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorELIANA RODRIGUES LEITE
ipen.autorJOSE ARANA VARELA
ipen.autorELSON LONGO
ipen.autorREGINALDO MUCCILLO
ipen.codigoautor8801
ipen.codigoautor7800
ipen.codigoautor7543
ipen.codigoautor1165
ipen.contributor.ipenauthorELIANA RODRIGUES LEITE
ipen.contributor.ipenauthorJOSE ARANA VARELA
ipen.contributor.ipenauthorELSON LONGO
ipen.contributor.ipenauthorREGINALDO MUCCILLO
ipen.date.recebimento16-09pt_BR
ipen.identifier.fi0.629pt_BR
ipen.identifier.ipendoc22606pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi0.001 - 1.499
ipen.type.genreArtigo
relation.isAuthorOfPublication3d8f9bc8-690f-4c58-9eb5-27158b96d99c
relation.isAuthorOfPublication3f01d491-616d-433c-b6a6-4b1ed1b6c55e
relation.isAuthorOfPublicationd441fbae-12a9-46dd-a957-1cec88cb15e0
relation.isAuthorOfPublication97e4b17d-7782-42dc-a38c-60d9b37440a4
relation.isAuthorOfPublication.latestForDiscovery97e4b17d-7782-42dc-a38c-60d9b37440a4
sigepi.autor.atividadeMUCCILLO, R.:1165:720:Spt_BR
sigepi.autor.atividadeLEITE, E.R.:8801:-1:Npt_BR
sigepi.autor.atividadeLONGO, E.:7543:-1:Npt_BR
sigepi.autor.atividadeVARELA, J.A.:7800:-1:Npt_BR
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