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      https://www.ias.ac.in/article/fulltext/boms/009/02/0117-0121

    • Keywords

       

      Nasicon analogues; superionic conductors; solid electrolytes; hopping rate; frequency dispersion; jump frequency; mobile ion concentration

    • Abstract

       

      The a.c. conductivity of ionic materials shows two regions of frequency-dependent conductivity over a wide range of frequencies. Jonscher’s law of dielectric response for ionic conductors enables us to characterize the conductivities. The region of low frequency dispersion approximates to a frequency-independent plateau enabling us to obtain the d.c. conductivity. In some other conductors, the presence of low-frequency dispersion cannot be neglected while determining the effective d.c. conductivity. We have used this method to extract the d.c. conductivity and hopping rate as well as to estimate concentrations of the mobile ions (carriers) in some NASICON analogues.

    • Author Affiliations

       

      N B Desai1 K Byrappa1 A B Kulkarni1 2 G S Gopalakrishna1

      1. Department of Geology, University of Mysore, Manasagangotri, Mysore - 570 006, India
      2. Department of Physics, Gulbarga University, Gulbarga - 585 106, India
    • Dates

       
  • Bulletin of Materials Science | News

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