Efficiently enhanced energy storage performance of Ba_(2)Bi_(4)Ti_(5)O_(18) film by co-doping Fe^(3+)and Ta^(5+)ion with larger radius

作     者：Qiong Wu Lei Zhao Xinghao Chen Shifeng Zhao 吴琼;赵雷;陈兴豪;赵世峰

作者机构：Inner Mongolia Key Laboratory of Nanoscience and Nanotechnology&School of Physical Science and TechnologyInner Mongolia UniversityHohhot 010021China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第9期

页      面：540-546页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant Nos.12074204,11864028,and 11904054) the Natural Science Foundation of Inner Mongolia,China(Grant No.2022ZD06) 

主　　题：Ba_(2)Bi_(4)Ti_(5)O_(18)film ferroelectrics energy storage co-doped radius 

摘      要：We present an efficient strategy,that is the co-substitution of Fe^(3+)and Ta^(5+)ions with large radius for Ti^(4+)ion,to enhance energy storage performance of Ba_(2)Bi_(4)Ti_(5)O_(18) *** the films co-doped with Fe^(3+)and Ta^(5+)ions,the maximum polarization under the same external electric field is improved because the radius of Fe^(3+)and Ta^(5+)ions is larger than that of Ti^(4+)***,due to the composition and chemical disorder,the relaxor properties are also slightly improved,which can not be achieved by the film doped with Fe^(3+)ions *** is more,for the films doped with Fe^(3+)ion only,the leakage current density increases greatly due to the charge imbalance,resulting in a significant decrease in breakdown *** is worth mentioning that the breakdown strength of Fe^(3+)and Ta^(5+)ions co-doped film does not decrease due to the charge *** important point is the recoverable energy storage density of the films co-doped with Fe^(3+)and Ta^(5+)ions has been greatly improved based on the fact that the maximum external electric field does not decrease and the maximum polarization under the same external electric field *** top of that,the hysteresis of the polarization has also been ***,the co-doped films with Fe^(3+)and Ta^(5+)ions have good frequency and temperature stability.