Study of Structure and Properties of Bi4Ti3O12 Prepared by Mechanochemical Syntheses
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Data
2008-01-01
Autores
Lazarevic, Z. Z.
Stojanovic, B. D.
Paiva-Santos, C. O. [UNESP]
Romcevic, N. Z.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Taylor & Francis Ltd
Resumo
Bi4Ti3O12 powder was synthesized from bismuth oxide and titanium oxide. Mixture of oxides was milled in zirconium oxide jar in the planetary ball-mill during 1, 3 and 6 h. Extended time of milling directed to formation of higher amount of titanates perovskite phase. Bi4Ti3O12 was formed between 1 and 3 h of milling time. The phase formation of Bi4Ti3O12, crystal structure and powder particle size were followed by XRD, Raman spectroscopy and SEM analysis. After milling for various times the powders were compacted by pressing and isothermal sintering. Sample milled for 3 h and subsequently sintered at 1000C for 24 h exhibit a hysteresis loop, confirming that the synthesized material possesses ferroelectric properties. All results affect that the structure Bi4Ti3O12 is strongly dependent on the milling time.
Descrição
Palavras-chave
Bi4Ti3O12, powder ceramic, mechanochemical synthesis, ferroelectric properties
Como citar
Ferroelectrics. Abingdon: Taylor & Francis Ltd, v. 368, p. 392-400, 2008.