The electrical properties and relaxation behavior of AgNb1/2Ta1/2O3 ceramic
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- 作者：K.Ganga Prasad kotagirigangaprasad@gmail.com ; Manish K. Niranjan ; Saket Asthana
- 关键词：Ceramics ; Dielectric properties ; Complex impedance ; Conductivity studies
- 刊名：Physica B: Condensed Matter
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：506
- 期：Complete
- 页码：42-47
- 全文大小：851 K
- 卷排序：506
文摘
Polycrystalline AgNb1/2Ta1/2O3 powder was prepared by solid state reaction method. Preliminary x-ray diffractogram analysis of some aspects of crystal structure showed that a single phase compound formed exhibiting a monoclinic system. Impedance spectroscopy showed the presence of both bulk and grain boundary effects in the material. The relaxation behavior was studied by fitting electric modulus with Bergman function confirms us the existence of non-Debye type of relaxation the material. The ac conductivity spectrum obeyed Funke's double power law and fitting in results, the hopping parameters n1,n2 were indicating the existence of small and large range polaron hopping in the material. The band gap of the material 3.02 eV measured by using UV visible spectroscopy.