Study of Ionic Conduction and Dielectric Behavior of Pure and K⁺ Doped Ag₂CdI₄

Khalid Siraj, Rafiuddin Rafiuddin

Physical Chemistry Division, Department of Chemistry, Faculty of Sciences, Aligarh Muslim University, Aligarh, India.
Physical Chemistry Division, Department of Chemistry, Faculty of Sciences, Aligarh Muslim University, Aligarh, India..

DOI: 10.4236/snl.2012.22003                

Abstract

The ionic conductivity of 8, 9 and 10 mol% K⁺ doped Ag₂CdI₄ showed slight decrease whereas the phase transition was observed almost at the same temperature as it reported for pure Ag₂CdI₄. This decrease in conductivity likely results from decrease in free volume because of the larger K⁺ ions (r_K⁺ = 133 pm and r_Ag⁺ = 129 pm) entering Ag₂CdI₄ lattice which is unchanging in size. The dielectric constant of Ag₂CdI₄ was found to increase with increasing temperature as the orientation of dipoles is facilitated in rising temperature.

Keywords

Electrical Conductivity; Dielectric Constant; Ionic Conductor; Nanocrystalline

Conflicts of Interest

The authors declare no conflicts of interest.

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