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Piezoelectric Characterization of (0.6)BiFeO 3 –(0.4)PbTiO 3 Multiferroic Ceramics
Author(s) -
Freitas Valdirlei F.,
Santos Ivair A.,
Botero Ériton,
Fraygola Barbara M.,
Garcia Ducinei,
Eiras José A.
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04118.x
Subject(s) - multiferroics , piezoelectricity , materials science , ceramic , characterization (materials science) , ferroelectricity , ferromagnetism , thermal stability , piezoelectric coefficient , composite material , nuclear magnetic resonance , condensed matter physics , nanotechnology , optoelectronics , chemical engineering , physics , dielectric , engineering
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 × 10 −12 m/V and g 31 =−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 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.