Structural, dielectric, and electrical study of bismuth ferrite-lithium vanadate
Centurion University of Technology and Management, Bhubaneswar, Odisha, India
2 Materials Research Laboratory, School of Physics, Sambalpur University, Jyoti Vihar, Burla 768019, Odisha, India
Received in final form: 22 June 2022
Accepted: 26 August 2022
Published online: 10 October 2022
The composite, BiFeO3-LiVO3 was synthesized through a solid-state reaction technique. The X-ray diffraction (XRD) confirmed the formation of the tetragonal structure at room temperature. The dielectric constant and dielectric loss increased with the rise in temperature. The Nyquist plot projected the contribution of bulk effect and a slight indication of grain boundary effect. The presence of a temperature-dependent relaxation process occurred in the material. Electrical modulus confirmed the non-Debye type relaxation and indicated the asymmetric peak broadening for the spread of relaxation time. The activation energies were calculated from the ac conductivity by linear fitting. The fitted Jonscher power law was very close which implied a similar type of charge carrier which exists in the conduction mechanism for the system. Thermistor parameters were evaluated using the grain resistance for different temperatures.
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