"Piezoelectric ceramics with high piezoelectricity and broad temperatur" by Qinghu Guo, Fei Li et al.
Abstract There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other, i.e., higher piezoelectricity, lower Curie temperature, thus, limits their applications over broad temperature range. In this research, Sm-modified 0.15 Pb(Mg Nb )O -(0.85-x)PbZrO -xPbTiO ceramics have been studied, where excellent piezoelectric coefficients d = 720 pC/N, d ∗ = 950 pm/V and high Curie temperature T = 293 °C were simultaneously achieved for x = 0.42 composition by designing the morphotropic phase bo...
Source: uow.edu.au