Significantly enhanced strain and low hysteresis of synergistic designed textured ceramics for piezoelectric actuators

Piezoelectric actuators, which transform electrical energy into displacement/force, serve as critical components in precision actuation. The core piezoelectric material in piezoelectric actuators inherently possesses hysteresis, which remains a persistent challenge for achieving high-precision and stable displacement output. Here, through local structural heterogeneity and texture engineering, we utilize the synergistic strategy in Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ ceramics, achieving a F₀₀₁∼93% along with a substantial enhancement in piezoelectric performance. The textured ceramics exhibit piezoelectric strain coefficient d₃₃*as high as 1680 p.m./V, which is ∼2 times that of random ceramics, respectively. Especially, the H_s value of textured samples achieves ∼1.4% at 30 kV/cm, which is superior to several typical PMNT textured, PZT-5H and PZT4 ceramics under the same/similar electric field. The piezoelectric actuator based on developed textured ceramics shows larger displacement values and good linearity compared to the PZT-5H actuator. This work proposes a viable strategy to design high-performance piezoelectric materials for advanced precision actuation systems.