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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Piezoelectric Characterization of (0.6)BiFeO3-(0.4)PbTiO3 Multiferroic Ceramics

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Autor(es):
Freitas, Valdirlei F. [1] ; Santos, Ivair A. [1] ; Botero, Eriton [2] ; Fraygola, Barbara M. [2] ; Garcia, Ducinei [2] ; Eiras, Jose A. [2]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, Parana - Brazil
[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Journal of the American Ceramic Society; v. 94, n. 3, p. 754-758, MAR 2011.
Citações Web of Science: 28
Resumo

In this work, the full piezoelectric characterization of high-energy ball-milled (HEBM) (0.6)BiFeO(3)-(0.4)PbTiO(3) (HE-BF PT60/40) multiferroic magnetoelectric ceramics was performed. The whole set of piezoelectric, mechanical, and elastic coefficients was obtained. The results revealed piezoelectric coefficients, namely d(31)=-41.6 x 10-12 m/V and g(31)=-9.65 x 10-3 Vm/N (at room temperature), as high as those of other commercial piezoceramics. In fact, HE-BFPT60/40 piezoceramics produced by HEBM showed three times higher piezoelectric coefficients than those previously reported for conventionally synthesized piezoceramics. The thermal stability of d(31) and g(31) piezoelectric coefficients near room temperature, as well as the weak ferromagnetic response of HE-BFPT60/40 samples, make the (0.6)BiFeO(3)-(0.4)PbTiO(3) multiferroic magnetoelectric ceramics potential candidates for applications in future multifunctional piezo-magnetic-electric devices. (AU)

Processo FAPESP: 08/04025-0 - Materiais multifuncionais multiferróicos nanoestruturados: síntese, propriedades, fenomenologia e aplicações
Beneficiário:José Antonio Eiras
Linha de fomento: Auxílio à Pesquisa - Temático