Separation of dielectric and space charge polarizations in CaCu3Ti4O12/CaTiO3 composite polycrystalline systems

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBueno, Paulo Roberto
dc.creatorRibeiro, William C.
dc.creatorRamirez, Miguel A.
dc.creatorVarela, José Arana
dc.creatorLongo, Elson
dc.date2014-05-20T15:28:36Z
dc.date2016-10-25T18:03:42Z
dc.date2014-05-20T15:28:36Z
dc.date2016-10-25T18:03:42Z
dc.date2007-04-02
dc.date.accessioned2017-04-06T00:08:01Z
dc.date.available2017-04-06T00:08:01Z
dc.identifierApplied Physics Letters. Melville: Amer Inst Physics, v. 90, n. 14, 3 p., 2007.
dc.identifier0003-6951
dc.identifierhttp://hdl.handle.net/11449/38378
dc.identifierhttp://acervodigital.unesp.br/handle/11449/38378
dc.identifier10.1063/1.2720301
dc.identifierWOS:000245512200074
dc.identifierWOS000245512200074.pdf
dc.identifierhttp://dx.doi.org/10.1063/1.2720301
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/881504
dc.descriptionThe complex analysis of dielectric/capacitance is a very useful approach to separate different polarization contributions existing in polycrystalline ceramics. In this letter, the authors use this type of spectroscopic analysis to separate the bulk's dielectric dipolar relaxation contributions from the polarization contribution due to space charge in the grain boundaries of a CaCu3Ti4O12/CaTiO3 polycrystalline composite system. The bulk dielectric dipolar relaxation was attributed to the self-intertwined domain structures from the CaCu3Ti4O12 phase coupled to the dipole relaxation from the CaTiO3 phase, while the space charge relaxation was attributed to the Schottky-type potential barrier responsible for the highly non-Ohmic properties observed in this composite polycrystalline system.
dc.languageeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relationApplied Physics Letters
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleSeparation of dielectric and space charge polarizations in CaCu3Ti4O12/CaTiO3 composite polycrystalline systems
dc.typeOtro


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