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| Sm掺杂增强PZT基弛豫型铁电陶瓷压电性能研究 | |
| 引用本文： | 董昌,梁瑞虹,周志勇,董显林.Sm掺杂增强PZT基弛豫型铁电陶瓷压电性能研究[J].无机材料学报,2021,36(12):1270-1276. |
| 作者姓名： | 董昌 梁瑞虹 周志勇 董显林 |
| 作者单位： | 1.中国科学院 上海硅酸盐研究所, 中国科学院无机功能材料与器件重点实验室, 上海 200050 2.中国科学院大学, 北京 100049 3.中国科学院 上海硅酸盐研究所, 高性能陶瓷和超微结构国家重点实验室, 上海 200050 |
| 基金项目： | 中国科学院先导科技专项课题(XDA2203003);科技部重点研发计划(2018YFC0308603) |
| 摘 要： | 锆钛酸铅(PZT)基压电陶瓷是一类应用非常广泛的功能材料, 可应用于水声换能器、压电马达、医疗超声换能器以及声表面波滤波器等。通过改性提高PZT基压电陶瓷的压电性能一直是该领域的研究热点。本工作采用传统固相反应法制备了准同型相界(Morphotropic Phase Boundary, MPB)组分的Sm-0.25PMN-0.75PZT压电陶瓷, 并对其微观结构以及宏观性能进行了系统研究。研究结果表明：引入Sm3+可以增强压电陶瓷的局域结构异质性, 提升介电响应从而提高压电性能。当Sm3+引入过多时, 铁电极化的长程连续性被大面积打断, 压电性能下降。本实验中得到的最优组分压电陶瓷性能为：高压电系数d33~824 pC/N, 高压电电压常数g33~27.1×10-3 m2/C和相对较高居里温度TC~178 ℃, 电致应变在室温至150 ℃范围内低于5%, 有较好的温度稳定性, 是极具应用前景的高性能压电材料。 |
| 关 键 词： | PZT 局域结构异质性 准同型相界(MPB) 高压电系数 |
| 收稿时间： | 2021-03-11 |
| 修稿时间： | 2021-04-22 |
Piezoelectric Property of PZT-based Relaxor-ferroelectric Ceramics Enhanced by Sm Doping |
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| DONG Chang,LIANG Ruihong,ZHOU Zhiyong,DONG Xianlin.Piezoelectric Property of PZT-based Relaxor-ferroelectric Ceramics Enhanced by Sm Doping[J].Journal of Inorganic Materials,2021,36(12):1270-1276. | |
| Authors: | DONG Chang LIANG Ruihong ZHOU Zhiyong DONG Xianlin |
| Affiliation: | 1. Key Laboratory of Inorganic Functional Materials and Devices of CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 2. University of Chinese Academy of Sciences, Beijing 100049, China 3. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
| Abstract: | Lead zirconate titanate (PZT)-based piezoelectric ceramics are a type of functional material with a wide range of applications, which can be used in ultrasound transducers, piezomotor, medical ultrasound transducer, and surface acoustic wave filter, etc. Improving the piezoelectric property of PZT-based piezoelectric ceramics through modification has always been a research hotspot in this field. In this work, Sm-0.25PMN-0.75PZT piezoelectric ceramics near the morphotropic phase boundary (MPB) were fabricated by conventional solid-phase reaction method, and its microstructure and macroscopic property were systematically studied. The research results show that introduction of Sm3+ can enhance the local structural heterogeneity of piezoelectric ceramics, accelerate the dielectric response, and improve the piezoelectric performance. When Sm3+ is excessively introduced, the long- range continuity of ferroelectric polarization is interrupted in a large area while the piezoelectric performance decreases. The performance of the optimal composition piezoelectric ceramic obtained in this experiment is: high voltage electric coefficient (d33~824 pC/N), high voltage electric voltage constant (g33~27.1×10-3 m2/C), and relatively high Curie temperature (TC~178 ℃). The electrostrain is less than 5% in the range of room temperature to 150 ℃, with relatively good temperature stability. Therefore, this PET-based relaxor-ferrelectric ceramic is a high- performance piezoelectric material with great application prospects. |
| Keywords: | PZT local structure heterogeneity morphotropic phase boundary (MPB) high piezoelectric coefficient |
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