Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

Journal of Materiomics

Hua Hao¹  Fei Li²  Fangquan Xia³  Shujun Zhang⁴  Xiaoyi Gao⁴  Qinghu Guo⁴  Pengbin Wang⁴  Hanxing Liu⁴  Huajun Sun⁵ 

[1] Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, New South Wales, 2500, Australia;Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi’an Jiaotong University, Xi’an, 710049, China;School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China;State Key Laboratory Silicate Materials for Architectures, Center for Smart Materials and Device Integration, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China;

关键词: Piezoelectric ceramics;    Local structural heterogeneity;    Electromechanical response;    Thermal stability;   

DOI  :  

来源: DOAJ

【 摘 要 】

There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other, i.e., higher piezoelectricity, lower Curie temperature, thus, limits their applications over broad temperature range. In this research, Sm-modified 0.15 Pb(Mg1/3Nb2/3)O3-(0.85-x)PbZrO3-xPbTiO3 ceramics have been studied, where excellent piezoelectric coefficients d33 = 720 pC/N, d33∗ = 950 pm/V and high Curie temperature TC = 293 °C were simultaneously achieved for x = 0.42 composition by designing the morphotropic phase boundary (MPB) with local structural heterogeneity. Of particular significance is that a high thermal stability was observed with piezoelectric variation below 20% with temperature up to 280 °C, demonstrating that the x = 0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is required. This work provides a good paradigm for designing high-performance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity.

【 授权许可】

Unknown