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(K0.5Bi0.5)ZrO3 (KBZ) lead-free perovskite compound: Structural study and physical properties

hal.structure.identifierIRCER - Axe 3 : organisation structurale multiéchelle des matériaux [IRCER-AXE3]
dc.contributor.authorLELIEVRE, Jerome
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJOSSE, Michaël
hal.structure.identifierIRCER - Axe 3 : organisation structurale multiéchelle des matériaux [IRCER-AXE3]
dc.contributor.authorMARCHET, Pascal
dc.date.issued2023
dc.identifier.issn1293-2558
dc.description.abstractEnThe structural study of (K0.5Bi0.5)ZrO3 compound (KBZ) evidenced a cubic ABO3 perovskite structure (space group: No 221 , lattice parameter: a = 0.4157 nm). Above room temperature, the lattice parameter increases linearly, with linear expansion coefficient α = 6.4 × 10−6 K−1. No phase transition or decomposition occurs up to 1273 K (1000 °C). Below room temperature, small anomalies in Differential Scanning Calorimetry (DSC) and dielectric losses (tan(δ)) remain structurally unexplained and will need further investigation. Furthermore, KBZ appears as difficult to sinter. Although the A-site of the ABO3 perovskite lattice is occupied by two ions of different valences (K+/Bi3+, mixed occupancy), we did not detect relaxor behaviour in KBZ dielectric properties. However, electrostriction was observed at room temperature. This property, combined to the limited thermal evolution of the relative permittivity indicate that KBZ may be an interesting material, provided that the sintering can be improved.
dc.language.isoen
dc.publisherElsevier
dc.subject.enLead-free perovskite
dc.subject.enX-ray diffraction
dc.subject.enNeutron diffraction
dc.subject.enCrystal structure
dc.subject.enElectrostriction
dc.title.en(K0.5Bi0.5)ZrO3 (KBZ) lead-free perovskite compound: Structural study and physical properties
dc.typeArticle de revue
dc.identifier.doi10.1016/j.solidstatesciences.2023.107192
dc.subject.halChimie/Matériaux
bordeaux.journalSolid State Sciences
bordeaux.page107192
bordeaux.volume140
bordeaux.peerReviewedoui
hal.identifierhal-04084628
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04084628v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Solid%20State%20Sciences&rft.date=2023&rft.volume=140&rft.spage=107192&rft.epage=107192&rft.eissn=1293-2558&rft.issn=1293-2558&rft.au=LELIEVRE,%20Jerome&JOSSE,%20Micha%C3%ABl&MARCHET,%20Pascal&rft.genre=article


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