The in situ and ex situ temperature dependence of dielectric and piezoelectric properties of 0.1(Bi0.5K0.5)TiO3-0.6BiFeO3-0.3PbTiO3 (BKT-BFPT) ceramics were characterized, and related mechanisms were studied. The tetragonal distortion, Curie temperature Tc, depoling temperature Td, and piezoelectric coefficient d33 of BKT-BFPT are 0.06, 545 °C, 520 °C, and 205 pC/N, respectively. The in situ piezoelectric coefficient variation of BKT-BFPT ceramics from room temperature to 280 °C is only 10%, being 1/5 and 1/10 those of 0.36BiScO3-0.34PbTiO3 and Pb(Zr0.52Ti0.48)O3 ceramics. The better dielectric and piezoelectric thermal stabilities are owing to the temperature insensitive domain texture of BFPT-BKT ceramics due to their large lattice distortion. Resistivity results reflected that the higher depoling temperature derived from the ex situ measurement than that from the in situ test results from the high-temperature conductivity.
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5 August 2024
Research Article|
August 07 2024
High piezoelectric coefficient and thermal stability of BKT-BFPT ceramics with ex situ high depoling temperature at 520 °C
Yu Zhou;
Yu Zhou
(Formal analysis, Writing – original draft)
1
College of Underwater Acoustic Engineering, Harbin Engineering University
, Harbin 150001, China
2
The Third Research Institute of China Electronics Technology Group Corporation
, Beijing 100015, China
3
Institute of Acoustics, Chinese Academy of Sciences
, Beijing 100190, China
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Fei Wen
;
Fei Wen
(Data curation, Formal analysis)
4
Xi'an Institute of Advanced Technology, Hangzhou Dianzi University
, Hangzhou 310018, China
5
School of Mechanical Engineering, Hangzhou Dianzi University
, Hangzhou 310018, China
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Xiping Mo;
Xiping Mo
(Project administration, Supervision)
1
College of Underwater Acoustic Engineering, Harbin Engineering University
, Harbin 150001, China
3
Institute of Acoustics, Chinese Academy of Sciences
, Beijing 100190, China
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Lili Li;
Lili Li
a)
(Methodology, Writing – review & editing)
4
Xi'an Institute of Advanced Technology, Hangzhou Dianzi University
, Hangzhou 310018, China
6
Engineering Research Center of Smart Microsensors and Microsystems, College of Electronics and Information, Hangzhou Dianzi University
, Hangzhou 310018, China
a)Authors to whom correspondence should be addressed: lilili@hdu.edu.cn; gxy16@outlook.com; and kpfocus@shu.edu.cn
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Xiaoyi Gao;
Xiaoyi Gao
a)
(Resources, Validation)
7
Shandong Industrial Ceramics Research and Design Institute Co, Ltd
., Zibo 255000, People's Republic of China
a)Authors to whom correspondence should be addressed: lilili@hdu.edu.cn; gxy16@outlook.com; and kpfocus@shu.edu.cn
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Jianguo Chen
Jianguo Chen
a)
(Resources)
8
School of Materials Science and Engineering, Shanghai University
, Shanghai 200444, China
a)Authors to whom correspondence should be addressed: lilili@hdu.edu.cn; gxy16@outlook.com; and kpfocus@shu.edu.cn
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a)Authors to whom correspondence should be addressed: lilili@hdu.edu.cn; gxy16@outlook.com; and kpfocus@shu.edu.cn
Appl. Phys. Lett. 125, 062904 (2024)
Article history
Received:
June 13 2024
Accepted:
July 24 2024
Citation
Yu Zhou, Fei Wen, Xiping Mo, Lili Li, Xiaoyi Gao, Jianguo Chen; High piezoelectric coefficient and thermal stability of BKT-BFPT ceramics with ex situ high depoling temperature at 520 °C. Appl. Phys. Lett. 5 August 2024; 125 (6): 062904. https://doi.org/10.1063/5.0223310
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