Simultaneously achieved high piezoelectricity and resistivity in CaBi2Nb2O9-based ceramics with high curie temperature

被引:9
作者
Fan, Wenying [1 ]
Yao, Daoyong [2 ]
Huang, Shuo [3 ]
Chen, Binjie [1 ]
Shen, Binglin [1 ]
Ju, Min [1 ]
Dou, Zhongshang [1 ]
Lu, Jingtong [4 ]
Wu, Chaofeng [5 ]
Gong, Wen [5 ]
Yao, Fang-Zhou [1 ,6 ]
Wang, Ke [1 ,4 ]
机构
[1] Wuzhen Lab, Res Ctr Adv Funct Ceram, Jiaxing 314500, Peoples R China
[2] Zhucheng Power Supply Co, State Grid Shandong Elect Power Co, Weifang 262200, Peoples R China
[3] Peking Univ Third Hosp, Ctr Reprod Med, Dept Obstet & Gynaecol, Beijing 100191, Peoples R China
[4] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[5] Tongxiang Tsingfeng Technol Co Ltd, Jiaxing 314501, Zhejiang, Peoples R China
[6] Tsinghua Univ, Ctr Adv Ceram Mat & Devices, Yangtze Delta Reg Inst, Jiaxing 314006, Zhejiang, Peoples R China
关键词
CaBi2Nb2O9; Piezoelectricity; Resistivity; Thermal stability; High-temperature piezoceramics; ENHANCED ELECTRICAL-PROPERTIES; CRYSTAL-STRUCTURE; BISMUTH TITANATE; FERROELECTRICITY; PIEZOCERAMICS; STABILITY; VACANCIES; (LI; CE;
D O I
10.1016/j.ceramint.2024.01.069
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
To guarantee the functional operation of high-temperature piezoceramics in harsh circumstances, both large piezoelectricity and superior resistivity are prerequisites. However, it remains a formidable challenge to achieve these objects. Herein, we report Ce-doped CaBi2Nb2O9-based high-temperature polycrystals, which can simultaneously deliver a high piezoelectric coefficient d(33) of 21.8 pC/N and decent resistivity rho of 7.1 x 10(7) Omega cm at 500 degrees C, along with a high Curie temperature of 916 degrees C. More encouragingly, the materials are also gifted with exceptional thermal stability (< 10% variation of d(33) in a broad range from ambient temperature up to 900 degrees C). In-depth multiscale structural characterizations unveil that the outstanding comprehensive performance of Ce-doped CaBi2Nb2O9-based ceramics originate from the synergistic effects of refined grain size and domain morphology, and reduced defect concentration. This work not only demonstrates that CaBi2Nb2O9-based ceramics hold enormous potential for high-temperature implements, but also offers prospects to exploit high-performance high-temperature piezoceramics.
引用
收藏
页码:11667 / 11675
页数:9
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