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dc.contributor.authorPardo, Lorena-
dc.contributor.authorGarcía, Álvaro-
dc.contributor.authorBrebøl, Klaus-
dc.contributor.authorMercadelli, Elisa-
dc.contributor.authorGalassi, Carmen-
dc.date.accessioned2014-12-02T12:42:58Z-
dc.date.available2014-12-02T12:42:58Z-
dc.date.issued2014-10-
dc.identifier.citationAdvances in Science and Technology 90: 12-18 (2014)es_ES
dc.identifier.issn1662-8969-
dc.identifier.urihttp://hdl.handle.net/10261/108274-
dc.description.abstractSubmicron-structured (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNBT6) dense ceramics, from nanometric powder synthesized by sol gel auto-combustion at 500ºC and obtained by hot-pressing (800ºC-2h) and subsequent recrystallization at moderate temperature (1000-1050ºC-1h), have been studied. In-situ measurements at the shear mode of electromechanical resonance of non-standard thickness-poled shear plates as a function of the temperature show higher depolarization temperature than measurements at the radial mode of thin disks. Shear mode related material coefficients are measurable up to 160ºC, being k15≈30% and d15≈250 pC.N-1 at 130ºC. Depolarization is a complex phenomena caused by a ferroelectric (FE) macrodomains thermal randomization and a phase transition from the field-induced FE phase to a relaxor phase. The early stage of such a transition involves a non-negligible piezoelectricity arising most probably by the percolative coexistence of ferroelectric macrodomains in the resonator under the given stress field for each resonance mode.es_ES
dc.language.isoenges_ES
dc.publisherTrans Tech Publicationses_ES
dc.relation.isversionofPostprint-
dc.rightsopenAccesses_ES
dc.subjectBismuth sodium titanatees_ES
dc.subjectBarium Titanatees_ES
dc.subjectLead-Freees_ES
dc.subjectPiezoelectric Ceramicses_ES
dc.subjectFerroelectricses_ES
dc.subjectPhase Transitionses_ES
dc.subjectShear Resonanceses_ES
dc.titleCharacterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramicses_ES
dc.typeartículoes_ES
dc.identifier.doi10.4028/www.scientific.net/AST.90.12-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.4028/www.scientific.net/AST.90.12-
dc.relation.csices_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
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