Dielectric relaxation, electrical conductivity measurements, electric modulus and impedance analysis of WO3 nanostructures

The electrical conductivity and dielectric properties of WO3 nanostructures were measured by impedance spectroscopy using 50 Hz-5 MHz frequency in steps of 100 Hz and 303-383 K temperature. The dielectric behavior is analyzed using real and imaginary parts of dielectric constant (epsilon'), dielectric loss (epsilon ''), loss factor (tan delta), electric modulus (M' and M '') and impedance (Z' and Z '') and complex impedance analysis. The electrical conductivity remained originate towards a function of frequency and temperature. The frequency exponent `s' is found to decrease from 0.89 to 0.35 with an increase of temperature which infers the cor-related barrier hopping mechanism (CBH) that exists in WO3 nanostructures. The Cole-Cole plot explains the complex impedance for different temperatures. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

Impedance spectroscopy was used to measure the electrical conductivity and dielectric properties of WO3 nanostructures, revealing that the conductivity is influenced by frequency and temperature. The frequency exponent 's' decreases with increasing temperature, indicating the presence of the correlated barrier hopping mechanism in WO3 nanostructures.