Composition-sensitive electrical properties of charge nonstoichiometric 0.94Bi0.5+xNa0.5−xTiO3–0.06BaTiO3 ceramics

Journal of Advanced Dielectrics

Haibo Zhang¹  Lei Sun²  Ling Li²  Rui-Xue Wang²  Shan-Tao Zhang²  Zheng-Bin Gu²  Ji Zhang² 

[1] 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;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;

关键词: nonstoichiometry;    bnt-bt;    composition-sensitive;    electrical properties;   

DOI  :  10.1142/S2010135X19500127

来源: DOAJ

【 摘 要 】

Charge nonstoichiometric 0.94Bi0.5+xNa0.5−xTiO3–0.06BaTiO3 (BNT-BT) (x=−0.02,−0.01,0,0.01,0.02) ceramics were prepared 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 Bi0.5Na0.5TiO3-based materials.

【 授权许可】

Unknown