Phase evolution, microstructure, electric properties of (Ba1–xBi0.67xNa0.33x)(Ti1–xBi0.33xSn0.67x)O3 ceramics

作     者：Xiuli CHEN Xu LI Huanfu ZHOU Jie SUN Xiaoxia LI Xiao YAN Congcong SUN Junpeng SHI 

作者机构：Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi Key Laboratory of Nonferrous Materials and New Processing Technology Ministry of Education School of Materials Science and Engineering Guilin University of Technology 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2019年第8卷第3期

页      面：427-437页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by National Natural Science Foundation of China (Nos. 11664008 and 61761015) Natural Science Foundation of Guangxi (Nos. 2018GXNSFFA050001, 2017GXNSFDA198027, and 2017GXNSFFA198011) 

主　　题：structure thermal stability energy storage 

摘      要：(Ba1–xBi0.67xNa0.33x)(Ti1–xBi0.33xSn0.67x)O3(abbreviated as BBNTBS,0.02≤x≤0.12)ceramics were fabricated via a traditional solid state reaction *** phase transition of BBNTBS from tetragonal to pseudo cubic is demonstrated by XRD and Raman *** BBNTBS(x=0.1)ceramics have decent properties with a highεr(~2250),smallΔε/ε25℃ values of±15%over a wide temperature range from–58 to 171℃,and low tanδ≤0.02 from 10 to 200℃.The basic mechanisms of conduction and relaxation processes in the high temperature region were thermal activation,and oxygen vacancies might be the ionic charge transport ***,BBNTBS(x=0.1)exhibited decent energy storage density(Jd=0.58 J/cm3)and excellent thermal stability(the variation of Jd is less than 3% in the temperature range of 25–120℃),which could be a potential candidate for high energy density capacitors.