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

Autor(es)

Freitas, Valdirlei F. ^[1] ; Santos, Ivair A. ^[1] ; Botero, Eriton ^[2] ; Fraygola, Barbara M. ^[2] ; Garcia, Ducinei ^[2] ; Eiras, Jose A. ^[2]

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

• 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
• Modalidade de apoio: Auxílio à Pesquisa - Temático