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Journal of Advanced Ceramics 2022, 11(1): 184-195 https://doi.org/10.1007/s40145-021-0526-6
Research Article | Open Access | Issue | Published: 24 December 2021

Defect engineering of BCZT-based piezoelectric ceramics with high piezoelectric properties

Show Author's Information Xinjian WANG1,  Yu HUAN1( ),  Yixuan ZHU1,  Peng ZHANG1,  Wenlong YANG1,  Peng LI2,  Tao WEI1,  Longtu LI3,  Xiaohui WANG3
School of Material Science and Engineering, University of Jinan, Jinan 250022, China
School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Keywords:
defect engineering, BCZT ceramics, Mn-doping, different sintering atmosphere, p/n-type conduction mechanism
Cite this article:
WANG X, HUAN Y, ZHU Y, et al. Defect engineering of BCZT-based piezoelectric ceramics with high piezoelectric properties. Journal of Advanced Ceramics, 2022, 11(1): 184-195. https://doi.org/10.1007/s40145-021-0526-6
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Abstract Full text Electronic supplementary material About this article

The intrinsic conduction mechanism and optimal sintering atmosphere of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) ceramics were regulated by Mn-doping element in this work. By Hall and impedance analysis, the undoped BCZT ceramics exhibit a typical n-type conduction mechanism, and the electron concentration decreases with the increasing oxygen partial pressure. Therefore, the undoped ceramics exhibit best electrical properties (piezoelectrical constant d33 = 585 pC·N-1, electro-mechanical coupling factor kp = 56%) in O2. A handful of Mn-doping element would transfer the conduction mechanism from n-type into p-type. And the hole concentration reduces with the decreasing oxygen partial pressure for Mn-doped BCZT ceramics. Therefore, the Mn-doped ceramics sintered in N2 have the highest insulation resistance and best piezoelectric properties (d33 = 505 pC·N-1, kp = 50%). The experimental results demonstrate that the Mn-doping element can effectively adjust the intrinsic conduction mechanism and then predict the optimal atmosphere.


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About this article

Defect engineering of BCZT-based piezoelectric ceramics with high piezoelectric properties

Show Author's information Xinjian WANG1, Yu HUAN1( ), Yixuan ZHU1, Peng ZHANG1, Wenlong YANG1, Peng LI2, Tao WEI1, Longtu LI3, Xiaohui WANG3
School of Material Science and Engineering, University of Jinan, Jinan 250022, China
School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Abstract

The intrinsic conduction mechanism and optimal sintering atmosphere of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) ceramics were regulated by Mn-doping element in this work. By Hall and impedance analysis, the undoped BCZT ceramics exhibit a typical n-type conduction mechanism, and the electron concentration decreases with the increasing oxygen partial pressure. Therefore, the undoped ceramics exhibit best electrical properties (piezoelectrical constant d33 = 585 pC·N-1, electro-mechanical coupling factor kp = 56%) in O2. A handful of Mn-doping element would transfer the conduction mechanism from n-type into p-type. And the hole concentration reduces with the decreasing oxygen partial pressure for Mn-doped BCZT ceramics. Therefore, the Mn-doped ceramics sintered in N2 have the highest insulation resistance and best piezoelectric properties (d33 = 505 pC·N-1, kp = 50%). The experimental results demonstrate that the Mn-doping element can effectively adjust the intrinsic conduction mechanism and then predict the optimal atmosphere.

Keywords: defect engineering, BCZT ceramics, Mn-doping, different sintering atmosphere, p/n-type conduction mechanism

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Publication history

Received: 11 June 2021
Revised: 25 July 2021
Accepted: 09 August 2021
Published: 24 December 2021
Issue date: January 2022

Copyright

© The Author(s) 2021.

Acknowledgements

The work was supported by the National Natural Science Foundation of China (Grant Nos. 52072150 and 51972146), the Young Elite Scientists Sponsorship Program by CAST, the State Key Laboratory of New Ceramics and Fine Processing Tsinghua University (Grant No. KF202002), and the Open Foundation of Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices (Grant No. EFMD2021002Z).

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