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Preparation of SrBi2Ta2O9 ferroelectric thick films by electrophoretic deposition using aqueous suspensions

dc.contributor.authorZanetti, S. M.
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorLeite, E. R.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:29:45Z
dc.date.available2014-05-20T15:29:45Z
dc.date.issued2003-01-01
dc.description.abstractSrBi2Ta2O9 ferroelectric thick films were prepared by electrophoretic deposition (EPD). For that, ceramic powders were prepared by chemical method in order to obtain compounds with chemical homogeneity. The polymeric precursor method was used for the synthesis of the SrBi2Ta2O9 powder. The crystallographic structure of the powder was examined by X-ray diffraction, and the surface area was determined by single point BET adsorption. The 0.03 vol% suspension was formed by dispersing the powder in water using two different polymers as dispersants: an ester polyphosphate (C213) and an ammonium polyacrilate (Darvan 821-A). The influence of the different dispersants on the powder surface properties were investigated by zeta potential measurements. The films were deposited on platinum-coated alumina and Pt/Ti/SiO2/Si substrates by electrophoretic deposition using a 4 mA constant current, for 10 min, with two parallel electrodes placed at a separation distance of 3 min in the suspension. Several cycles of deposition-drying of the deposit was carried out until the desired thickness was obtained. After thermal treatment at temperatures ranging from 700 to 1000degreesC, the films were characterized by X-ray diffraction and scanning electron microscopy.en
dc.description.affiliationUNESP, LIEC, Inst Quim, BR-14807455 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, LIEC, Inst Quim, BR-14807455 Araraquara, SP, Brazil
dc.format.extent297-307
dc.identifier.citationInnovative Processing and Synthesis of Ceramics, Glasses, and Composites Vii. Westerville: Amer Ceramic Soc, v. 154, p. 297-307, 2003.
dc.identifier.issn1042-1122
dc.identifier.urihttp://hdl.handle.net/11449/39254
dc.identifier.wosWOS:000188792900027
dc.language.isoeng
dc.publisherAmer Ceramic Soc
dc.relation.ispartofInnovative Processing and Synthesis of Ceramics, Glasses, and Composites Vii
dc.relation.ispartofsjr0,120
dc.rights.accessRightsAcesso abertopt
dc.sourceWeb of Science
dc.titlePreparation of SrBi2Ta2O9 ferroelectric thick films by electrophoretic deposition using aqueous suspensionsen
dc.typeTrabalho apresentado em eventopt
dcterms.rightsHolderAmer Ceramic Soc
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQARpt
unesp.departmentFísico-Química - IQARpt

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