Impedance and modulus analysis of double perovskite Pb_2BiVO_6

摘要

The member of double perovskite family Pb_2BiVO_6 was synthesized by a moderate temperature (~700 ℃) by solid-state route. The room temperature X-ray diffraction pattern of the sample confirms the formation of a single phase new compound. The scanning electron microscope image of the studied compound clearly shows the grains are uniformly distributed with minimal voids. Impedance, modulus and conductivity properties of the compound exhibits a strong correlation with the micro-structure and resistive properties of the material. The electrical transport properties of the material show the existence of non-exponential-type of conductivity relaxation in the material.