Enhancing Electromechanical Properties of PZT-Based Piezoelectric Ceramics by High-Temperature Poling for High-Power Applications,ACS Applied Materials & Interfaces

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Enhancing Electromechanical Properties of PZT-Based Piezoelectric Ceramics by High-Temperature Poling for High-Power Applications
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-03-17 , DOI: 10.1021/acsami.2c19802
Wugang Wang _{1,

2,

3} , Zhengran Chen _{1,

4} , Zhiyong Zhou _{1,

5} , Yaoguo Li ₆ , Ruihong Liang _{1,

5}

Affiliation

Defect engineering is a proven method to tune the properties of perovskite oxides. In demanding high-power piezoelectric ceramic applications, acceptor doping is the most effective method to harden ceramics, but it inevitably degrades the ceramics’ electromechanical properties. Herein, a poling method based on acceptor doping, namely, high-temperature poling, is implemented by applying an electric field above the Curie temperature for poling to achieve a balance of the properties of piezoelectric coefficient d₃₃ and mechanical quality factor Q_m. After high-temperature poling, the piezoelectric property of 0.6 mol % Mn-doped Pb_0.92Sr_0.08(Zr_0.533Ti_0.443Nb_0.024)O₃ is d₃₃ = 483 pC/N and Q_m = 448. Compared with the traditional poling, the piezoelectric coefficient d₃₃ of the high-temperature poling ceramics increased by approximately 40%, and Q_m also increased by nearly 18%. Therefore, high d₃₃ and Q_m were exhibited by our PZT piezoelectric ceramics. Rayleigh’s law analysis, XRD, and transmission electron microscopy analysis show that, after high-temperature poling, the considerably increased d₃₃ is related to the large increase in the reversible domain wall motion in the intrinsic effect, while the slightly increased Q_m is related to the inhibited irreversible domain wall motion in the extrinsic effect. This study reports a method for high-temperature poling and provides insights into the design of high-power piezoelectric ceramics with high d₃₃ and Q_m.

中文翻译：

通过高温极化增强 PZT 基压电陶瓷的机电性能以用于大功率应用

缺陷工程是一种经过验证的调整钙钛矿氧化物性能的方法。在高要求的大功率压电陶瓷应用中，受体掺杂是硬化陶瓷最有效的方法，但它不可避免地会降低陶瓷的机电性能。在此，基于受主掺杂的极化方法，即高温极化，通过施加高于居里温度的电场进行极化，以达到压电系数d ₃₃和机械品质因数Q _m特性的平衡。高温极化后0.6 mol % Mn掺杂的Pb _0.92 Sr _0.08 (Zr _0.533 Ti _0.443 Nb)的压电性能_0.024 )O ₃为d ₃₃ = 483 pC/N，Q _m = 448。与传统极化相比，高温极化陶瓷的压电系数d _{33提高了约40%，}Q _m也提高了近18 %。因此，我们的 PZT 压电陶瓷表现出高d ₃₃和Q _{m 。}瑞利定律分析、XRD和透射电子显微镜分析表明，高温极化后，d _{33显着增加}与本征效应中可逆畴壁运动的大幅度增加有关，而略微增加的Q _m与外因效应中抑制不可逆畴壁运动有关。本研究报告了一种高温极化方法，并为设计具有高d ₃₃和Q _m的大功率压电陶瓷提供了见解。

更新日期：2023-03-17

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