In this paper, we report the measurement of impedance spectroscopy for the bis(2-amino-4-methylpyridinium) tetrachloridozincate (II) compound in the frequency range 209 Hz to 5 MHz with the temperature ranging from 308 up to 368 K. The impedance plots have shown semicircle arcs at different temperatures and an electrical equivalent circuit has been proposed to explain the impedance results. Detailed analysis of the impedance spectrum suggests that the electrical properties of the material are strongly temperature dependent. The frequency-dependent conductivity data were fitted in the Jonscher's law: Ïƒac(Ï‰) = Ïƒdc + AÏ‰n. The conductivity follows the Arrhenius relation. Thus the conduction in the material is probably due to a hopping or a small polaron tunneling process.
Keywords: Impedance spectroscopy, equivalent circuit, electrical properties, conductivity.