Relaxor Behavior, Polarization Buildup, and Switching in Nanostructured 0.92 PbZn1/3Nb2/3O3–0.08 PbTiO3 Ceramics

Abstract
The relaxor-type behavior, electrical polarization buildup, and switching in 0.92Pb(Zn1/3Nb2/3)O3–0.08PbTiO3 nanostructured ceramics with a grain size of ≈20 nm is reported for the first time. This composition presents the highest-known piezoelectric coefficients, yet phase stability is an issue. Ceramics can only be obtained by the combination of mechanosynthesis and spark-plasma sintering. The results raise the possibility of using nanoscale, perovskite-relaxor-based morphotropic-phase-boundary materials for sensing and actuation in nanoelectromechanical systems.