화학공학소재연구정보센터
Materials Research Bulletin, Vol.47, No.9, 2219-2226, 2012
High and tunable piezoelectric coefficients in 0.675Pb(Mg1/3Nb2/3)O-3-0.325PbTiO(3) ceramics
In this study, ceramic samples with composition 0.675Pb(Mg1/3Nb2/3)O-3-0.325PbTiO(3) were tested and assessed in terms of piezoelectric applications. This material showed relaxor ferroelectric behavior at temperatures around the ferro-paraelectric phase transition. In this temperature region, the material also had a high real dielectric permittivity, which fell slightly with the application of an electric field between 0 and 1 kV/mm. Consequently, high effective piezoelectric coefficients were observed for this material, which were found to be almost linearly tunable with electric fields between 1 and 3 kV/mm. Hence, the material studied here appears to be a promising candidate for the manufacture of certain piezoelectric devices. (c) 2012 Elsevier Ltd. All rights reserved.