In this work, texturing is proposed to improve the piezoelectric response of PSN-PMN-PT ceramics. The PSN-PMN-PT textured ceramic with a Lotgering factor F 001 higher than 99% was synthesized by the liquid-phase-assisted template grain growth (TGG) method. The addition of CuO/B 2 O 3 sintering aids improves the BT templates induced grain orientation growth behavior significantly. In comparison with its random counterpart, the Cu/B-T textured ceramic exhibits a high Lotgering factor F 001 of 99% and significantly enhanced dielectric and piezoelectric responses: ε r ∼ 3100, tan δ ∼ 0.8%, d 33 ∼ 1030 pC N –1 , d 33 ⋅ g 33 ∼ 34.2 × 10 –12 m 2 N –1 , d 33 * ∼ 1490 pm V –1 @5 kV cm –1 , S max ∼ 0.26%@20 kV cm –1 and H s ∼ 8.5%. In the meantime, good temperature stability is observed in the Cu/B-T textured ceramic with a variation of d 33 *@20 kV cm –1 and annealed d 33 lower than 9.68% and 18.1% over a wide temperature range of 25–140 °C. This work shows that PSN-PMN-PT textured ceramic (Cu/B-T) has great potential for electromechanical device applications such as precision actuators, ultrasound transducers, and energy harvesters.
In this study, anisotropy strategy was employed to effectively enhance the piezoelectric performance and energy harvesting capability of 6 Pb(Sc 1/2 Nb 1/2 )O 3 -61 Pb(Mg 1/3 Nb 2/3 )O 3 -33PbTiO 3 (Abb. 6PSN–61PMN–33PT) ceramics. A high crystallographic orientation (Lotgering factor F 001 exceeding 98.5 %) was obtained in 6PSN–61PMN–33PT textured ceramics using the template grain growth (TGG) method. The piezoelectric response of 6PSN–61PMN–33PT ceramics was significantly improved, while the dielectric constant ( ε r ) was reduced. Compared to random ceramics, the textured ceramics exhibited higher figure of merit ( d 33 × g 33 ), markedly enhanced electromechanical coupling factor ( k p ) and piezoelectric coefficient ( d 33 ). The optimal properties were obtained in 6PSN–61PMN–33PT textured ceramics with 1 wt% BaTiO 3 template: d 33 = 1179 pC/N, k p = 0.87, ε r = 2766， d 33 × g 33 = 5.67 × 10 −11 m 2 /N, dielectric loss tan δ about 0.56 %, mechanical quality factor Q m = 194, and piezoelectric strain constant d 33 ∗ = 1130 pm/V and maximum strain S = 0.23 % at 20 kV/cm. These results demonstrate that 6PSN–61PMN–33PT textured ceramics hold promising application potential in energy harvesters.
危险品化学品经营许可证（带存储）