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Microstructural, structural and electrical properties of La3+-modified Bi4Ti3O12 ferroelectric ceramics

Santos, V.B. ; M’Peko, J.-C. ; Mir, M. ; Mastelaro, V.R. ; Hernandes, A.C.

Journal of the European Ceramic Society, 2009-03, Vol.29 (4), p.751-756 [Periódico revisado por pares]

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Título:
Microstructural, structural and electrical properties of La3+-modified Bi4Ti3O12 ferroelectric ceramics
Autor: Santos, V.B. ; M’Peko, J.-C. ; Mir, M. ; Mastelaro, V.R. ; Hernandes, A.C.
É parte de: Journal of the European Ceramic Society, 2009-03, Vol.29 (4), p.751-756
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: Bi4-xLaxTi3O12 (BLT) ceramics were studied in terms of a La3+-modified microstructure and phase development as well as electrical response. According to XRD and electrical measurements, the solubility limit of La3+ into the Bi4Ti3O12 (BIT) matrix was slightly above x = 1.5. La3+ had the effect of reducing the material grain size, while changing its morphology from the plate-like form, typical of BIT ceramics, to a spherical-like form. The behaviour of the temperature of the ferroelectric-paraelectric phase transition as well as the normal or diffuse and/or relaxor nature of this transition depended on the La3+ content.
Idioma: Inglês

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