Study of the Dielectric Properties of Lead-Free Perovskite Ba(Fe1/2Ta1/2)O3 and Ba(Bi1/2Ta1/2)O3 Ceramics

被引：0
作者：
Mishra, Amodini [1 ]
Choudhary, S. N. [1 ]
Prasad, K. [1 ]
Choudhary, R. N. P. [2 ]
机构：
[1] TM Bhagalpur Univ, Univ Dept Phys, Bhagalpur 812007, India
[2] Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 712302, W Bengal, India
来源：
XVI NATIONAL SEMINAR ON FERROELECTRICS AND DIELECTRICS (NSFD-XVI) | 2011年 / 1372卷
关键词：
Complex perovskite; Dielectric properties; Lead-free; Electroceramic; JUMP RELAXATION;
D O I：
10.1063/1.3644441
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Lead-free complex perovskite ceramics Ba(Fe1/2Ta1/2)O-3 and Ba(Bi1/2Ta1/2)O-3 were synthesized using conventional solid state reaction technique. The crystal symmetry, space group and unit cell dimensions were determined from the experimental results using FullProf software. XRD analysis of the compound indicated the formation of a single-phase cubic structure with the space group Pm3m. A very high value of dielectric constant (similar to 10(4)) was observed for Ba(Fe1/2Ta1/2)O-3 while for Ba(Bi1/2Ta1/2)O-3 it is 639. The correlated barrier hopping (CBH) model was employed to successfully explain the mechanism of charge transport in Ba(Fe1/2Nb1/2)O-3 and Ba(Bi1/2Ta1/2)O-3.
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页数：5
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