Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

作     者：Qinghu Guo Fei Li Fangquan Xia Pengbin Wang Xiaoyi Gao Hua Hao Hanxing Liu Huajun Sun Shujun Zhang 

作者机构：State Key Laboratory Silicate Materials for ArchitecturesCenter for Smart Materials and Device IntegrationSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Electronic Materials Research LaboratoryKey Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049China School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022China Institute for Superconducting and Electronic MaterialsAustralian Institute of Innovative MaterialsUniversity of WollongongNew South Wales2500Australia State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingInternational School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2021年第7卷第4期

页      面：683-692页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by NSFC-Guangdong Joint Funds of the Natural Science Foundation of China(No.U1601209) the Natural Science Foundation of China(51872213) Major Program of the Natural Science Foundation of China(51790490) the Fundamental Research Funds for the Central Universities(2019-YB-009) 

主　　题：Piezoelectric ceramics Local structural heterogeneity Electromechanical response Thermal stability 

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 *** this research,Sm-modified 0.15 Pb(Mg_(1/3)Nb_(2/3))O_(3)-(0.85-x)PbZrO_(3)-xPbTiO_(3) ceramics have been studied,where excellent piezoelectric coefficients d33¼720 pC/N,d_(33)*=950 pm/V and high Curie temperature T_(C)=293℃ were simultaneously achieved for x=0.42 composition by designing the morphotropic phase boundary(MPB)with local structural *** particular significance is that a high thermal stability was observed with piezoelectric variation below 20%with temperature up to 280℃,demonstrating that the x=0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is *** work provides a good paradigm for designing highperformance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity.