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Structure–microstructure–property relationships in lead-free BCTZ piezoceramics processed by conventional sintering and spark plasma sintering

hal.structure.identifierLaboratoire des Matériaux Ferroélectriques
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBENABDALLAH, Feres
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorELISSALDE, Catherine
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHUNG SEU, U-Chan
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMICHAU, Dominique
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPOULON-QUINTIN, Angeline
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorGAYOT, Marion
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorGARRETA, Pascale
hal.structure.identifierLaboratoire des Matériaux Ferroélectriques
dc.contributor.authorKHEMAKHEM, Hamadi
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAGLIONE, Mario
dc.date.issued2015
dc.identifier.issn0955-2219
dc.description.abstractEnLead-free piezoelectric ceramics belonging to the pseudo-binary system (1 − x)BaTi0.8Zr0.2O3-x Ba0.7Ca0.3TiO3(BCTZ, x = 0.32 and 0.5) were prepared using conventional sintering and spark plasma sintering. This comparative study shows how the macroscopic properties of ferroelectric BCTZ perovskites are affected when the grain size is decreased. The crystallographic structure and the microstructural characteristics are thoroughly investigated for ceramic samples obtained by both sintering methods. We clearly demonstrate that the dielectric, piezoelectric, pyroelectric and ferroelectric properties in SPS ceramics are strongly affected by the grain size and the structural defects leading to local strain fields which undermine the polarisation flexibility. This confirms that the critical compositions showing remarkably large piezoelectric coefficients are extremely sensitive to external and internal stresses.
dc.language.isoen
dc.publisherElsevier
dc.subject.enLead-free piezoceramics
dc.subject.enSpark plasma sintering
dc.subject.enferroelectricity
dc.subject.enpiezoelectricity
dc.subject.endefects
dc.title.enStructure–microstructure–property relationships in lead-free BCTZ piezoceramics processed by conventional sintering and spark plasma sintering
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jeurceramsoc.2015.06.030
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of the European Ceramic Society
bordeaux.page4153–4161
bordeaux.volume35
bordeaux.issue15
bordeaux.peerReviewedoui
hal.identifierhal-01218878
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01218878v1
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