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X-ray diffraction, dielectric, pyroelectric, piezoelectric and Ramanspectroscopystudies on (Ba0.95Ca0.05)0.8875Bi0.075TiO3 ceramic

hal.structure.identifierLaboratoire des Matériaux Ferroélectriques [LMF]
dc.contributor.authorZAGHOUENE, H.
hal.structure.identifierLaboratoire des Matériaux Ferroélectriques [LMF]
dc.contributor.authorKHEMAKHEM, Hamadi
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSIMON, Annie
dc.date.issued2012
dc.identifier.issn0272-8842
dc.description.abstractEnThe (Ba0.95Ca0.05)0.8875Bi0.075TiO3ceramic composition was prepared using the conventional mixed-oxide technique. X-raydiffraction at room temperature and dielectric permittivity in the temperature range from 85 to 450 K and frequency range from 102 to 2 × 105 Hz, respectively, were studied. The X-ray spectra were investigated by profile refinement technique with the use of specialized software at room temperature, the (Ba0.95Ca0.05)0.8875Bi0.075TiO3 composition crystallizes in quadratic perovskite structure. The dielectric measurements show classical ferroelectric behavior. The pyroelectric and piezoelectric results confirm the dielectric measurements. The pyroelectric coefficient is about 69.2 nC/cm2 K at the transition temperature (TC = 367 K). The piezoelectric constant is d31 = 31.1 pC/N and the electromechanical coupling factor is kP = 0.14679. Raman spectra of (Ba0.95Ca0.05)0.8875Bi0.075TiO3ceramic were taken at various temperatures and measured over the wave number range from 50 to 1000 cm−1. All the Raman bands were assigned as the transitional modes of Ba2+, Ca2+, Bi3+ and Ti4+ cations. The temperature evolution of Raman spectra across the transition shows an important evolution characterizing the disorder of the high temperature phase.
dc.language.isoen
dc.publisherElsevier
dc.title.enX-ray diffraction, dielectric, pyroelectric, piezoelectric and Ramanspectroscopystudies on (Ba0.95Ca0.05)0.8875Bi0.075TiO3 ceramic
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ceramint.2011.12.015
dc.subject.halChimie/Matériaux
bordeaux.journalCeramics International
bordeaux.page3135-3139
bordeaux.volume38
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-00682180
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00682180v1
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