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dc.contributor.authorFeteira, Antônio-
dc.contributor.authorElsebrock, R.-
dc.contributor.authorDias, Anderson-
dc.contributor.authorMoreira, Roberto Luiz-
dc.contributor.authorLanagan, Michael T.-
dc.contributor.authorSinclair, Derek C.-
dc.identifier.citationFETEIRA, A. et al. Synthesis and characterisation of La0.4Ba0.6Ti0.6RE0.4O3 (where RE =Y, Yb) ceramics. Journal of the European Ceramic Society, Amsterdam, v. 26, n.10-11, p. 1947-1951, 2006. Disponível em: <>. Acesso em: 02 fev. 2015.pt_BR
dc.description.abstractLa0.4Ba0.6Ti0.6RE0.4O3 (where RE =Y, Yb) powders were synthesised by the mixed oxide route. According to laboratory X-ray diffractometry both compositions are single-phase and can be indexed on the Pm3m space group; however, electron diffraction suggests the occurrence of anti-phase octahedral tilting or 1:1 ordering. Ceramics fired at 1600 ◦C for 4 h exhibit an average grain size of ∼20_m. Bright field TEM images suggest the occurrence of chemical inhomogeneity in both compositions. The dc conductivities and Raman spectra are similar for both compositions; however, La0.4Ba0.6Ti0.6Y0.4O3 ceramics exhibit εr ∼57, quality factor (Qf)∼750 GHz and temperature coefficient of resonance (TCF)∼12 ppm/K, whereas La0.4Ba0.6Ti0.6Yb0.4O3 ceramics exhibit εr ∼65, Qf∼4500 GHz and TCF∼1 ppm/K.pt_BR
dc.subjectBaTiO3 and titanatespt_BR
dc.subjectDielectric propertiespt_BR
dc.subjectElectron microscopypt_BR
dc.titleSynthesis and characterisation of La0.4Ba0.6Ti0.6RE0.4O3 (where RE =Y, Yb) ceramics.pt_BR
dc.typeArtigo publicado em periodicopt_BR
dc.rights.licenseO periódico Journal of the European Ceramic Society concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3577180790323.pt_BR
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