Effect of Nb on barium titanate prepared from citrate solutions
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Data
2002-12-01
Autores
Stojanović, B. D. [UNESP]
Foschini, C. R. [UNESP]
Zaghete, M. A. [UNESP]
Vieira, F. O S [UNESP]
Paiva-Santos, C. O. [UNESP]
Cilense, M. [UNESP]
Varela, José Arana [UNESP]
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Resumo
The influence of the addition of dopants on the microstructure development and electrical properties of BaTiO3 doped with 0.2, 0.4, 0.6, 0.8 mol% of Nb and 0.01 mol% of Mn based compounds was studied. Doped barium titanate was prepared using the polymeric precursor method from citrate solutions. The powders calcined at 700°C for 4 hours were analysed by infrared (IR) spectroscopy to verify the presence of carbonates, and by X-ray diffraction (XRD) for phase formation. The phase composition, microstructure and dielectric properties show a strong dependence on the amount of added niobium.
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Palavras-chave
BaTiO 3, Dielectric properties, Microstructure, Nb-doped, Organic precursor, Sintering
Como citar
Science of Sintering, v. 34, n. 1, p. 63-71, 2002.