omposition-sensitive electrical properties of charge nonstoichiometric 0.94Bi_(0.5+x)Na_(0.5-x)TiO_(3)–0.06BaTiO_(3)ceramics  

作　　者：Ji Zhang Rui-Xue Wang Ling Li Lei Sun Zheng-Bin Gu Haibo Zhang Shan-Tao Zhang 

机构地区：[1]National Laboratory of Solid State Microstructures Department of Materials Science and Engineering College of Engineering and Applied Science&Jiangsu Key Laboratory of Artificial Functional Materials&Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093,P.R.China [2]College of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould Technology Huazhong University of Science and Technology Wuhan 430074,P.R.China

出　　处：《Journal of Advanced Dielectrics》2019年第5期28-34,共7页先进电介质学报（英文）

基　　金：supported by the State Key Program for Basic Research of China(2015CB921203);the National Nature Science Foundation of China(11674156,51721001,11804150);the“Deng Feng B”of Nanjing University.

摘　　要：Charge nonstoichiometric 0.94Bi_(0.5+x)Na_(0.5-x)TiO_(3)-0.06BaTiO_(3)(BNT-BT)(x=-0.02,-0.01,0,0.01,0.02)ceramics were pre-pared and investigated.The depolarization temperature was dependent on composition and the ferroelectric property of x>0 was suppressed more significantly than the x<0,indicating the composition-sensitive electrical properties.Furthermore,the x=-0.02 was close to the insulator/conductor composition boundary while the x=0.02 was close to the ferroelectrics/relaxor boundary.These results were attributed to the complex effect of donor doping and acceptor doping on depolarization field.This work provides robust clues to tune and/or design electrical property and conductivity of Bi_(0.5)Na_(0.5)TiO_(3)-based materials.

关 键 词：NONSTOICHIOMETRY BNT-BT composition-sensitive electrical properties 

分 类 号：TQ1[化学工程]