Effect of Bi3+substitution on structural and electrical properties of polycrystalline NiWO4nanoparticles

Pristine- and Bi3+-doped NiWO(4)nanoparticles are synthesized by direct chemical precipitation. The structural properties are investigated using various characterization techniques. The electrical properties of pure and Bi3+-doped NiWO(4)samples are analysed with the help of dielectric permittivity, dissipation factor, impedance and electric modulus. Nyquist plots along with the equivalent circuits are used to analyse the relaxation and conduction mechanism of pure and Bi-doped NiWO4. Doping of Bi(3+)ion changes the structural and electrical properties of NiWO(4)samples. With Bi(3+)doping, the conductivity of NiWO(4)is increased along with variation in the conduction mechanism. Current work constitutes the first report on the study of electrical properties of Bi3+-doped NiWO(4)nanoparticles.