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

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In this work, the full piezoelectric characterization of high-energy ball-milled (HEBM) (0.6)BiFeO3–(0.4)PbTiO3 (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 d31=−41.6 × 10−12 m/V and g31=−9.65 × 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 d31 and g31 piezoelectric coefficients near room temperature, as well as the weak ferromagnetic response of HE-BFPT60/40 samples, make the (0.6)BiFeO3–(0.4)PbTiO3 multiferroic magnetoelectric ceramics potential candidates for applications in future multifunctional piezo-magnetic–electric devices.
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Document Type: Research Article

Affiliations: 1: Departamento de Física, Universidade Estadual de Maringá, 87020-900 Maringá, Paraná, Brazil 2: Departamento de Física, Universidade Federal de São Carlos, 13565–905 São Carlos, São Paulo, Brazil

Publication date: March 1, 2011

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