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

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

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Due to the thermal depolarization effect,adequate piezoelectric performance with high operating tem-perature is regarded to be challenging to accomplish concurrently in piezoceramics for applications in specific piezoelectric devices.In this work,we synthesized(0.8-x)BiFeO3-xPbTiO3-0.2Ba(Zr025Ti0.75)O3(abbreviated as BFO-xPT-BZT)ternary solid solutions with 0.15 ≤ x ≤ 0.30 by conventional solid-state reaction method.The MPB composition with a coexisting state of rhombohedral-tetragonal phases ex-hibits enhanced electromechanical properties,including Curie temperature of 380 ℃,large-signal equiv-alent piezoelectric coefficient d*33 of 395 pm V-1,small-signal piezoelectric coefficient d33 of 302 pC N-1,and electromechanical coupling factor kp of 50.2％,which is comparable to commercial PZT-5A ceramics,indicating potential in high-temperature applications.Furthermore,in-situ X-ray diffraction(XRD)and piezoelectric force microscopic(PFM)techniques demonstrate that multiphase coexistence and complex nanodomains promote piezoelectric response via synergism.The x=0.24 composition exhibits the high-est in-situ d33 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.

High-temperature piezoelectricsMorphotropic phase boundaryIn-situ techniqueDomain structureBFO

Yunyao Huang、Leiyang Zhang、Ruiyi Jing、Yang Yang、Vladimir Shur、Xiaoyong Wei、Li Jin

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Electronic Materials Research Laboratory,Key Laboratory of the Ministry of Education,School of Electronic Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China

Faculty of Materials and Manufacturing,Key Laboratory of Advanced Functional Materials,Education Ministry of China,Beijing University of Technology,Beijing 100124,China

School of Natural Sciences and Mathematics,Ural Federal University,Ekaterinburg,620000,Russia

国家自然科学基金Key Research and Development Program of Shaanxi国家重点研发计划国家重点研发计划Russian Science Foundationequipment of the Ural Center for Shared Use"Modern nanotechnology"Ural Federal UniversityMinistry of Science and Higher Education RFInternational Center for Dielectric Research(ICDR),Xi'an Jiaotong University,Xi'an,China

522611355482022KWZ-222021YFE01150002021YFB380060223-42-00116Reg.2968075-15-2021-677

2024

10.1016/j.jmst.2023.05.063

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.169(2)
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