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Enhancement of dielectric properties of lead-free BCZT ferroelectric ceramics by grain size engineering

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire de Matière Condensée et Nanostructures [LMCN]
dc.contributor.authorHANANI, Zouhair
hal.structure.identifierLaboratoire de Matière Condensée et Nanostructures [LMCN]
dc.contributor.authorMEZZANE, Daoud
hal.structure.identifierLaboratoire de Matière Condensée et Nanostructures [LMCN]
dc.contributor.authorAMJOUD, M.'Barek
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFOURCADE, Sébastien
hal.structure.identifierLaboratoire de Physique de la Matière Condensée - UR UPJV 2081 [LPMC]
hal.structure.identifierFaculty of Physics
dc.contributor.authorRAZUMNAYA, Anna G.
hal.structure.identifierLaboratoire de Physique de la Matière Condensée - UR UPJV 2081 [LPMC]
hal.structure.identifierL.D. Landau Institute for Theoretical Physics of RAS
dc.contributor.authorLUK'YANCHUK, Igor A.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGOUNÉ, Mohamed
dc.date.issued2019-03
dc.identifier.issn0749-6036
dc.description.abstractEnLead-free Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCZT) ceramics had attracted much attention for the fabrication of microelectronic devices by virtue of their excellent dielectric, ferroelectric and piezoelectric properties. To understand the effects of both mean grain size and grain size distribution on the dielectric properties of lead-free Ba0.85Ca0.15Ti0.9Zr0.1O3 (BCZT) ferroelectric relaxors, an original method was proposed. It is based on the surfactant-assisted solvothermal processing coupled with low-temperature conventional sintering at 1250 °C. In this way, three highly dense BCZT with different mean grain size and dissimilar grain size distribution were designed. A significant increase of dielectric properties was obtained by a control of grain size and densification process. The dielectric constants measured were ranged from 5370 to 9646 and the dielectric loss was enhanced by 70%. Surprisingly, it was evidenced that there is unequivocal link between mean grain size with dielectric properties. Indeed, it was found that the presence of high density of refined grains leads to an improvement of dielectric properties due to an enhancement of densification. This work may provide a new strategy to design ferroelectric materials with enhanced properties.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.enLead-free
dc.subject.enBCZT
dc.subject.enFerroelectric
dc.subject.enDielectric
dc.subject.enRelaxor
dc.subject.enMicrostructure
dc.title.enEnhancement of dielectric properties of lead-free BCZT ferroelectric ceramics by grain size engineering
dc.typeArticle de revue
dc.identifier.doi10.1016/j.spmi.2018.03.004
dc.subject.halChimie/Matériaux
dc.identifier.arxiv1810.09385v1
bordeaux.journalSuperlattices and Microstructures
bordeaux.page109-117
bordeaux.volume127
bordeaux.peerReviewedoui
hal.identifierhal-02057738
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02057738v1
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