| Electrical and Dielectric Characterization of Bismuth
Holmium Nickel Titanate (BiHoNiTiO6) |
Sujit Kumar Dehury,1 Deeptimayee Khatua,2 Ram Naresh Prasad Choudhary3 and Patnala
Ganga Raju Achary2,*
Pages : 135-141
DOI : 10.1080/0371750X.2021.1904290 |
| 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 tan 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 ac (ac conductivity), electrical
modulus and magneto-electric effect of the material were also reported in this paper.
[Keywords: Double perovskite, Multiferroic material, Electrical properties, Nyquist
plots, Dielectric relaxation] |
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