Electrical studies of Pb0.6Bi0.4Fe0.7Nb0.3O3 multiferroic

The multiferroic Pb0.6Bi0.4Fe0.7Nb0.3O3 was prepared using a single step solid state reaction technique. A comprehensive impedance spectroscopy technique was used to examine the dielectric, impedance, modulus and electrical conductivity of the sample. The dielectric constant of the sample was strongly affected by frequency and temperature. Temperature-dependent relaxation events in dielectric loss were seen in the material. With a non-Debye kind of relaxation process, the Nyquist plot shows the grains and grain boundary contribution to the conductivity. The bulk resistance reduces as the temperature rises and the temperature coefficient of resistance was found to be negative. The temperature-dependent relaxation processes with non-Debye type were shown in an electrical modulus study with increasing trend of AC conductivity with rise in temperature. Pb0.6Bi0.4Fe0.7Nb0.3O3 could be useful in multiferroic applications. Copyright (C) 2022 Elsevier Ltd. All rights reserved.

Automated summary

The multiferroic material Pb0.6Bi0.4Fe0.7Nb0.3O3 was prepared using a solid-state reaction technique. The study showed that its dielectric properties and electrical conductivity were influenced by frequency and temperature. Non-Debye relaxation processes were observed in the material, and the resistance decreased with increasing temperature, with a negative temperature coefficient of resistance.