Superior piezoelectric performance with high operating temperature in bismuth ferrite-based ternary ceramics

作     者：Yunyao Huang Leiyang Zhang Ruiyi Jing Yang Yang Vladimir Shur Xiaoyong Wei Li Jin Yunyao Huang;Leiyang Zhang;Ruiyi Jing;Yang Yang;Vladimir Shur;Xiaoyong Wei;Li Jin

作者机构：Electronic Materials Research LaboratoryKey Laboratory of the Ministry of EducationSchool of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Faculty of Materials and ManufacturingKey Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaBeijing University of TechnologyBeijing 100124China School of Natural Sciences and MathematicsUral Federal UniversityEkaterinburg620000Russia 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2024年第169卷第2期

页      面：172-181页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 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 the National Natu-ral Science Foundation of China(Grant No.52261135548) the Key Research and Development Program of Shaanxi(Program No.2022KWZ-22) the National Key Research and Development Program of China(Grant Nos.2021YFE0115000 and 2021YFB3800602) Russian Science Foundation(Project No.23-42-00116) The equipment of the Ural Center for Shared Use“Modern nanotechnology”Ural Federal University(Reg.No.2968) the Ministry of Science and Higher Education RF(Project No.075-15-2021-677)was used 

主　　题：High-temperature piezoelectrics Morphotropic phase boundary In-situ technique Domain structure BFO 

摘      要：Due to the thermal depolarization effect,adequate piezoelectric performance with high operating temperature is regarded to be challenging to accomplish concurrently in piezoceramics for applications in specific piezoelectric *** this work,we synthesized(0.8−x)BiFeO_(3)-x PbTi_(3)-0.2Ba(Zr_(0.25)Ti_(0.75))O_(3)(abbreviated as BFO-x PT-BZT)ternary solid solutions with 0.15≤x≤0.30 by conventional solid-state reaction *** MPB composition with a coexisting state of rhombohedral-tetragonal phases exhibits enhanced electromechanical properties,including Curie temperature of 380℃,large-signal equivalent piezoelectric coefficient d^(∗)_(33)of 395 pm V^(-1),small-signal piezoelectric coefficient d_(33)of 302 pC N^(-1),and electromechanical coupling factor k_(p)of 50.2%,which is comparable to commercial PZT-5A ceramics,indicating potential in high-temperature ***,in-situ X-ray diffraction(XRD)and piezoelectric force microscopic(PFM)techniques demonstrate that multiphase coexistence and complex nanodomains promote piezoelectric response via *** x=0.24 composition exhibits the highest in-situ d_(33)of 577 pC N^(-1)and good temperature stability in 30−280℃,indicating that BZT-modified BFO-PT ceramics are promising candidates for high-temperature piezoelectric devices.