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From core–shell BaTiO3@MgO to nanostructured low dielectric loss ceramics by spark plasma sintering

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBERTHELOT, Romain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBASLY, Brice
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBUFFIERE, Sonia
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAJIMEL, Jérôme
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorCHEVALLIER, Geoffroy
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorWEIBEL, Alicia
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVEILLÈRE, Amélie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorÉTIENNE, Laetitia
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHUNG, U-Chan
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGOGLIO, Graziella
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAGLIONE, Mario
hal.structure.identifierCentre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
dc.contributor.authorESTOURNÈS, Claude
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMORNET, Stéphane
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorELISSALDE, Catherine
dc.date.issued2014-01-28
dc.identifier.issn2050-7526
dc.description.abstractEnWe report a quite general way to design materials with tailored properties by combining thermolysis and fast sintering approaches. Submicrometric-sized BaTiO3 particles have been directly coated in a continuous nanocrystalline MgO shell through a thermal decomposition process. The electron microscopy study has evidenced a shell composed of randomly oriented MgO nanocrystallites. The final nanostructured composite, made of sub-micrometric MgO and BaTiO3 grains uniformly distributed, is obtained in situ during the SPS process. Such a rearrangement can be explained by the initial core–shell architecture, the weak cohesion of the MgO nanocrystallites and their soft plastic behavior under SPS conditions. The composite effect leads to significant modifications in both the dielectric properties and Curie–Weiss parameters compared to uncoated BaTiO3, especially a decrease and thermal stabilization of both the permittivity and the dielectric losses. We ascribe such changes to the stress generated during SPS through the extended interfaces between the two components.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.subject.enNanostructured ceramics
dc.subject.enSpark plasma sintering
dc.title.enFrom core–shell BaTiO3@MgO to nanostructured low dielectric loss ceramics by spark plasma sintering
dc.typeArticle de revue
dc.identifier.doi10.1039/c3tc31990c
dc.subject.halChimie/Matériaux
dc.subject.halSciences de l'ingénieur [physics]/Matériaux
bordeaux.journalJournal of Materials Chemistry C
bordeaux.page683-690
bordeaux.volume2
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-01130844
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01130844v1
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