High performance piezoelectric composite fabricated at ultra low temperature

This work presents the next leap in piezoelectric all-ceramic composites fabricated at ultra low temperatures. The “Upside-down” composite method is further developed and instead of water-soluble lithium molybdate used our earlier study, an organotitanate based precursor gel as a binder. Utilizing heat pressure transforms into titanium oxide which, together with lead zirconate titanate particles, forms high-performance composite. two-step fabrication only on mixing uniaxial hot-pressing sequences. samples are temperatures 275–350 °C exceptionally high fractions filler (filler to matrix 84:16 vol ratio) resulting porosity showing excellent dielectric properties. charge coefficient d33 ∼150 pC N−1 voltage coefficient, g33 ∼52 mVm obtained outperforms many other known (80% 70% higher than achieved bound upside-down composite, respectively) comparable even some bulk piezoceramics permittivity polymer-ceramic piezocomposites. sensor properties feasibility material from application point view successfully demonstrated by utilizing sample elements mode acceleration sensitivities commercial devices achieved.