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dc.contributor.authorVendrell Villafruela, Xavier
dc.contributor.authorGarcía García, José Eduardo
dc.contributor.authorRubio Marcos, F.
dc.contributor.authorOchoa Guerrero, Diego A.
dc.contributor.authorMestres Vila, Lourdes
dc.contributor.authorFernández, José F.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física Aplicada
dc.date.accessioned2013-07-02T12:16:11Z
dc.date.created2013-04
dc.date.issued2013-04
dc.identifier.citationVendrell, X. [et al.]. Exploring different sintering atmospheres to reduce nonlinear response of modified KNN piezoceramics. "Journal of the european ceramic society", Abril 2013, vol. 33, núm. 4, p. 825-831.
dc.identifier.issn0955-2219
dc.identifier.urihttp://hdl.handle.net/2117/19769
dc.description.abstractDense lead-free (K0.44Na0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3 piezoelectric ceramics are prepared by the conventional mixed oxide method. The effect of different sintering conditions (synthetic air, O2 and Ar) on some structural, dielectric and piezoelectric properties is studied. A long sintering time (16 h) promotes the formation of a secondary phase, which is assigned to K3LiNb6O17, tetragonal tungsten-bronze. High values of longitudinal piezoelectric constant are obtained when ceramics are sintered under Ar or O2 for low dwell time (2 h). However, the nonlinear response turns out to be significantly dependent on the sintering atmosphere. Results are discussed taking into account the formation of complex defects capable of pinning domain wall when oxygen vacancies are created by sintering. Thus, sintering in an inert atmosphere appears to be a good way of reducing nonlinear response in KNN-based piezoceramics.
dc.format.extent7 p.
dc.language.isoeng
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshDielectric measurements
dc.subject.lcshPiezoelectric ceramics
dc.subject.lcshNiobates
dc.subject.otherDielectric properties
dc.subject.otherLead-free piezoceramics
dc.subject.otherNiobates
dc.subject.otherPerovskites
dc.subject.otherPiezoelectric properties
dc.titleExploring different sintering atmospheres to reduce nonlinear response of modified KNN piezoceramics
dc.typeArticle
dc.subject.lemacDielèctrics
dc.subject.lemacCeràmica piezoelèctrica
dc.contributor.groupUniversitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius
dc.identifier.doi10.1016/j.jeurceramsoc.2012.09.025
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0955221912006115
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac11233792
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorVendrell, X.; Garcia, J. E.; Rubio, F.; Ochoa, D. A.; Mestres, L.; Fernández, J.
local.citation.publicationNameJournal of the european ceramic society
local.citation.volume33
local.citation.number4
local.citation.startingPage825
local.citation.endingPage831


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