通过掺入具有高自发极化特性的 Bi（Zn1/2Ti1/2）O3 增强 BiScO3-PbTiO3 陶瓷的压电特性

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-09-24 DOI:10.1016/j.jeurceramsoc.2024.116945

Mingwen Wang , Fenghua Tian , Chunchun Li , Shuai Yang , Jie Wu , Jinglei Li , Xuechen Liu , Jinjing Zhang , Fei Li

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引用次数: 0

摘要

高性能压电材料是制造压电传感器和致动器的核心要素。近年来，对具有高工作温度和大压电度的压电材料的需求日益增加。然而，传统的软掺杂方法往往会导致居里温度降低，从而增强压电响应。为解决这一问题，我们在 BiScO3-PbTiO3 陶瓷中掺入了自发极化（Ps ∼ 100 µC/cm2）和居里温度（Tc ∼ 1380 °C）较高的 Bi(Zn1/2Ti1/2)O3，从而在保持高居里温度的同时提高了压电响应。新开发的 0.08Bi(Zn1/2Ti1/2)O3-0.335BiScO3-0.585PbTiO3 陶瓷具有令人印象深刻的特性，包括 585 pC/N 的高 d33 值（与 0.08Bi(Zn1/2Ti1/2)O3-0.335BiScO3-0.585PbTiO3 陶瓷相比，d33 值提高了 ∼ 33%）。36BiScO3-0.64PbTiO3 陶瓷），机电耦合系数 k33 为 0.75，介电常数 ε′ 为 2380，相对较高的 Tc 为 421 °C。这些显著的改进为高温压电器件的发展带来了巨大的希望。

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Enhancing piezoelectric properties of BiScO3-PbTiO3 ceramics via- incorporation of Bi(Zn1/2Ti1/2)O3 with high spontaneous polarization

High-performance piezoelectric materials are the core elements for the fabrication piezoelectric transducers and actuators. In recent years, there has been an increasing demand for piezoelectric materials with both high operational temperature and large piezoelectricity. However, the conventional approach of soft doping to enhance the piezoelectric response often results in a reduction in Curie temperature. To address this issue, we incorporated Bi(Zn_1/2Ti_1/2)O₃ with a large spontaneous polarization (P_s ∼ 100 µC/cm²) and high Curie temperature (T_c ∼ 1380 °C) into BiScO₃-PbTiO₃ ceramics to improve the piezoelectric response while maintaining high T_c. The newly developed 0.08Bi(Zn_1/2Ti_1/2)O₃-0.335BiScO₃-0.585PbTiO₃ ceramic exhibits impressive properties including a high d₃₃ value of 585 pC/N (increased by ∼ 33 % compared to the 0.36BiScO₃-0.64PbTiO₃ ceramics), an electromechanical coupling coefficient k₃₃ of 0.75, a dielectric constant ε′ of 2380, a relatively high T_c of 421 °C. These remarkable improvements hold great promise for advancing high-temperature piezoelectric devices.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.