Large electrostrain response in binary Bi1/2Na1/2TiO3-Ba(Mg1/3Nb2/3)O3 solid solution ceramics

Superior Large-Signal Piezoelectric Coefficient in Textured NBT-Based Piezoceramics by Template-Induced Structure and Composition Modulation

“…(b) Normalized d 33 * values for the regularly 1150 °C-textured and liquid phase 1000 °C-textured samples as a function of the electric field. (c) Comparison of the electric field and d 33 * values of various lead-free NBT-based ceramics. ,,,,− (d) Unipolar S – E curves of the liquid phase 1000 °C-textured ceramic, the nontextured ceramic, and the nontextured NN-doped one measured at 40 kV/cm at 10 Hz. (e) Strain values and (f) normalized d 33 * values of the liquid phase 1000 °C-textured ceramic, the nontextured ceramic, and the nontextured NN-doped one as a function of the electric field.…”

“…As a consequence, the liquid-phase-assisted process has a significant effect on increasing the enhanced inverse piezoelectric coefficient in the textured ceramics, allowing the NBT-based materials to reach their phase transition state at a lower driving electric field. For comparison, Figure c summarizes the d 33 * values of various NBT-based piezoceramics and their corresponding driving electric field. ,,,,− It is worth noting that the studied ⟨001⟩-oriented NBT-based ceramics attains superior strain characteristics with a lower driving electric field simultaneously, displaying the prospect of replacing lead-based piezoelectric materials in the future.…”

Role of oxygen‐vacancy in piezoelectric properties and fatigue behavior of (Bi0.5Na0.5)0.93Ba0.07Ti1+xO3 ceramics

“…Similarly, upon reversing the applied field, the polar phase transformed back again to a weakly polar phase that corresponded to the peak at − E B . The other compositions that contained either a Ti deficiency or excess Ti exhibited saturated P ‐ E loops with two typical domain switching current peaks at the coercive field ± E c . Using the temperature of the ferroelectric‐to‐relaxor transition ( T F‐R ) as determined from the dielectric anomaly of the poled samples (Figure and Table ), P ‐ E and J ‐ E measurements of all the samples were performed at three temperatures near the T F‐R .…”