Abstract
A lead-free multiferroic double perovskite BiHoNiTiO6 (BHNT) was prepared at high temperature following mixed oxide solid state reaction mechanism. Structural evaluation by X-ray diffractogram suggested monoclinic crystal system for the BHNT. SEM images showed homogeneous morphology with almost similar and uniform grain distribution. The compound possessed low value of tanδ even at a high temperature (400oC) at 100 kHz. Evaluation of the dielectric and electrical plots with frequency and temperature obtained from the impedance spectroscopy revealed that the contributions of grains, grain boundaries and electrode has profound effect on the above properties. These plots are very much helpful to understand the conduction mechanism and microstructure characteristics of the electronic material. The experimental real and imaginary impedance data were modelled by designing an equivalent circuit with the capacitance and resistance parameter. The transport characteristics like σac (ac conductivity), electrical modulus and magneto-electric effect of the material were also reported in this paper.
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