Relaxor regulation and improvement of breakdown strength for Bi0.5Na0.5TiO3-based ceramics by co-doping with Ca and Nb

被引：10
作者：
Jiang, Zehua [1 ,2 ]
Yuan, Ying [1 ,2 ]
Yang, Hongcheng [1 ,2 ]
Li, Enzhu [1 ,2 ]
Zhang, Shuren [1 ,2 ]
机构：
[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China
[2] Univ Elect Sci & Technol China, Natl Engn Res Ctr Electromagnet Radiat Control Ma, Chengdu 610054, Sichuan, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 07期
关键词：
Lead-free; Relaxor ferroelectric; Oxygen vacancy; Energy storage; ENERGY-STORAGE PROPERTIES; LOW ELECTRIC-FIELDS; PHASE-TRANSITION; FERROELECTRIC PROPERTIES; DENSITY; TEMPERATURE; EFFICIENCY; BEHAVIOR; PERFORMANCE; CAPACITORS;
D O I：
10.1016/j.ceramint.2021.12.171
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：
In this paper, the dense perovskite structure ceramics (Na0.3Bi0.3Ba0.04Sr0.36)(1-x)CaxTi1-xNbxO3 were investigated. The long-range order structure was destructed by structural distortion, and the relaxor behavior was enhanced after the co-doping with Ca and Nb. Meanwhile, the restraint of oxygen vacancy resulted in low leakage current density and small grain size with the increase of breakdown strength ranging from 210 to 280 kV/cm. The high recoverable energy density (W-rec = 2.94 J/cm(3)) with high efficiency (eta = 91.04%) was obtained at x = 0.03, along with fast discharge speed (t(0.9)-180 ns), high power density (P-D = 56.15 MW/cm(3)), superior cycle stability and thermal stability. The properties guaranteed a promising and practical prospect in pulsed power systems.
引用
收藏
页码：9702 / 9709
页数：8
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