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Título

Bi4Ti3O12 Ceramics from Powders Prepared by Alternative Routes: Wet No-Coprecipitation Chemistry and Mechanochemical Activation

AutorAlgueró, Miguel ; Ferrer, P.; Vila Pena, Eladio ; Iglesias Pérez, Juan Eugenio; Castro, Alicia
Fecha de publicación2006
EditorJohn Wiley & Sons
CitaciónJ. Am. Ceram. Soc., 89 [11] 3340–3347 (2006)
ResumenThe processing of ferroelectric Bi4Ti3O12 ceramics from powders prepared by wet no-coprecipitation chemistry (WNCC) and mechanochemical activation (MCA) has been investigated. Dense ceramics were obtained at sintering temperatures as low as 900°C. Exaggerated grain growth was observed for samples from WNCC, but not for those from MCA. Dielectric properties are discussed in relation to the type and concentration of defects, which is smaller for ceramic samples from WNCC. The activation energy of the dielectric relaxation for ceramics from MCA suggests that additional VO•• are present at the pseudoperovskite [Bi2Ti3O10]2− block in this case.
Versión del editordoi:10.1111/j.1551-2916.2006.01234.x
URIhttp://hdl.handle.net/10261/19940
DOI10.1111/j.1551-2916.2006.01234.x
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