Abstract: In this research work, an equivalent circuit model has been designed for Lithium Bismuth Borate Glass which contains 5 mol% nickel and vanadium ions using CNLS fitting achieved with the help of LEVMW program. The equivalent circuit model is outlined on the basis of immittance spectroscopic measurements and the parameters’ estimation made in the input file till a valid run is achieved. The immittance spectroscopic measurements include the variations of resistance, capacitance, conductivity, electric modulus etc. with respect to frequency and temperature.
Keywords: Immittance Spectroscopy (IS), CNLS (Complex Nonlinear Least Squares), LEVM, NVLBB3 (Nickel Vanadium Lithium Bismuth Borate Glass), DE (Distributed Elements), Standard Deviation (SD).