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dc.contributor.authorVendrell Villafruella, Xavier
dc.contributor.authorGarcía García, José Eduardo
dc.contributor.authorCerdeiras Montero, Elena
dc.contributor.authorOchoa Guerrero, Diego A.
dc.contributor.authorRubio-Marcos, Fernando
dc.contributor.authorFernández Lozano, José Francisco
dc.contributor.authorMestres Vila, Lourdes
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2016-09-21T13:30:05Z
dc.date.available2018-11-15T01:30:49Z
dc.date.issued2016-11-15
dc.identifier.citationVendrell, X., Garcia, J. E., Cerdeiras, E., Ochoa, D. A., Rubio-Marcos, F., Fernández, J.F, Mestres, L. Effect of lanthanide doping on structural, microstructural and functional properties of K0.5Na0.5NbO3 lead-free piezoceramics. "Ceramics international", 15 Novembre 2016, vol. 42, núm. 15, p. 17530-17538.
dc.identifier.issn0272-8842
dc.identifier.urihttp://hdl.handle.net/2117/90116
dc.description.abstractLanthanides-doped K0.5Na0.5NbO3(KNN) lead-free piezoelectric ceramics are prepared by conventional solid-state reaction. The effects of lanthanum concentration and the lanthanide type on the structure, microstructure and ferro-piezoelectric properties are evaluated. Ln3+ doping has a slight effect on the structure, but greatly inhibits the grain growth. Moreover, a decrease in the Curie temperature and an increase in the dielectric constant values are observed when doping. Large amounts of lanthanum induce a diffuse phase transition and an increase of the dielectric losses. The piezoelectric properties are greatly improved when doping with small amounts of dopants. As the ionic radii of the lanthanide is reduced, the piezoelectric properties of the ceramics are increased, the Eu3+-doped ceramics show an increase of 29% of the piezoelectric coefficient d33 with respect to pure KNN. The results show that low concentrations of lanthanides improve significantly the functional properties of KNN lead-free piezoceramics. Doping with lanthanides should be taken into consideration in some other compositions based on KNN.
dc.format.extent9 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshPiezoelectric ceramics
dc.subject.otherLead-free piezoceramics
dc.subject.otherDonor doping
dc.subject.otherPiezoelectric properties
dc.subject.other(K
dc.subject.otherNa)NbO3
dc.titleEffect of lanthanide doping on structural, microstructural and functional properties of K0.5Na0.5NbO3 lead-free piezoceramics
dc.typeArticle
dc.subject.lemacCeràmica piezoelèctrica
dc.contributor.groupUniversitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius
dc.identifier.doi10.1016/j.ceramint.2016.08.066
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0272884216313712
dc.rights.accessOpen Access
local.identifier.drac18967203
dc.description.versionPostprint (author's final draft)
local.citation.authorVendrell, X.; Garcia, J. E.; Cerdeiras, E.; Ochoa, D. A.; Rubio-Marcos, F.; Fernández, J.F; Mestres, L.
local.citation.publicationNameCeramics international
local.citation.volume42
local.citation.number15
local.citation.startingPage17530
local.citation.endingPage17538


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