Sm掺杂Pb(Mg1/3Nb2/3)O3-PZT压电陶瓷的研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (4): 1433-1439.

Sm掺杂Pb(Mg_1/3Nb_2/3)O₃-PZT压电陶瓷的研究

汪跃群, 项光磊, 高亮

杭州应用声学研究所,杭州 310023

收稿日期:2021-11-12 修回日期:2022-01-19 出版日期:2022-04-15 发布日期:2022-04-27
通讯作者: 项光磊,工程师。E-mail:Xiangguanglei@foxmail.com
作者简介:汪跃群(1971—),男,高级工程师。主要从事压电陶瓷材料及元件、传感器技术的研究。E-mail:13868142859@163.com

Study on Sm-Doped Pb(Mg_1/3Nb_2/3)O₃-PZT Piezoelectric Ceramics

WANG Yuequn, XIANG Guanglei, GAO Liang

Hangzhou Applied Acoustics Research Institute, Hangzhou 310023, China

Received:2021-11-12 Revised:2022-01-19 Online:2022-04-15 Published:2022-04-27

摘要/Abstract

摘要： 本文通过一步反应合成法制备了铌镁-锆钛酸铅(Pb(Mg_1/3Nb_2/3)O₃-Pb(Zr,Ti)O₃,PMN-PZT)压电陶瓷,研究了稀土元素钐(Sm)掺杂对PMN-PZT(x%(摩尔分数)Sm-PMN-PZT)结构与电学性能的影响规律,得到了具有高压电性、高机电耦合系数和高居里温度的压电陶瓷。当x=2.0时,压电常数d₃₃=611 pC/N,机电耦合系数k_p=0.68,介电损耗tan δ=1.65%,相对介电常数ε_r=2 650,居里温度T_C=283 ℃。测试压电陶瓷电致应变性能,在3 kV/mm下单极电致应变达到0.20%,显示出其大应变材料的特征。结果表明,Sm掺杂PMN-PZT压电陶瓷具有优异的综合电学性能,有望在换能器、传感器以及致动器等领域广泛应用。

关键词: PMN-PZT压电陶瓷, 稀土元素掺杂, 压电性能, 机电耦合系数, 居里温度, 大应变

Abstract: In this paper, the Pb(Mg_1/3Nb_2/3)O₃-Pb(Zr,Ti)O₃(PMN-PZT) piezoelectric ceramics were prepared by one-step synthesis method. The effect of Sm-doping on the structure and electrical properties of PMN-PZT ceramics were investigated. High piezoelectric performances are achieved in 2.0% (mole fraction) Sm-PMN-PZT ceramics, which are piezoelectric constant d₃₃=611 pC/N, electromechanical coupling coefficient k_p=0.68, dielectric loss tan δ=1.65%, relative dielectric constant ε_r=2 650, along with a high Curie temperature T_C=283 ℃. Furthermore, a large unipolar strain of 2.0%Sm-PMN-PZT ceramics is attained to be 0.20% at the electric field of 3 kV/mm, which shows the characteristic of large strain material. These results suggest that the Sm-doped PMN-PZT ceramics with outstanding comprehensive properties are promising in the field of transducers, sensors, actuators, etc.

Key words: PMN-PZT piezoelectric ceramics, rare-earth element doping, piezoelectricity, electromechanical coupling coefficient, Curie temperature, large strain

中图分类号:

TM282

汪跃群, 项光磊, 高亮. Sm掺杂Pb(Mg_1/3Nb_2/3)O₃-PZT压电陶瓷的研究[J]. 硅酸盐通报, 2022, 41(4): 1433-1439.

WANG Yuequn, XIANG Guanglei, GAO Liang. Study on Sm-Doped Pb(Mg_1/3Nb_2/3)O₃-PZT Piezoelectric Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(4): 1433-1439.

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Sm掺杂Pb(Mg_1/3Nb_2/3)O₃-PZT压电陶瓷的研究

Study on Sm-Doped Pb(Mg_1/3Nb_2/3)O₃-PZT Piezoelectric Ceramics

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