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Vol. 35 No. 12 (2023): Vol 35 Issue 12, 2023

Copyright (c) 2023 Shahnaz kossar

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Impact of (Sm, Sr) Co-Doping at Bi-Site on the Structural, Optical, Multiferroic and Dielectric Properties of Bismuth Ferrite Nanocomposites

https://doi.org/10.14233/ajchem.2023.30681
Shahnaz Kossar
Faculty of Natural Sciences, GNA University, Sri Hargobindgarh, Phagwara-Hoshiarpur Road, Phagwara-144401, India
https://orcid.org/0000-0002-2332-2454

Corresponding Author(s) : Shahnaz Kossar

shazia.rajput0505@gmail.com

Asian Journal of Chemistry, Vol. 35 No. 12 (2023): Vol 35 Issue 12, 2023

Abstract

A series of samarium (Sm) and strontium (Sr) co-doped BiFeO3 (BFO) and pure BiFeO3 (BFO) nanocomposites were synthesized by the
sol-gel auto-combustion method. The X-ray diffraction pattern of the synthesized Sr:Sm BFO nanocomposites shows a rhombohedral
perovskite structure. The morphological studies revealed that synthesized Sr:Sm BFO and pure BFO exhibit a regular arrangement of
grains. The diffuse reflectance spectra (DRS) exhibit the doping of Sr:Sm BFO reduces the optical band gap values of BFO from 2.02 eV
to 1.69 eV. It was observed that the prepared Sr:Sm BFO and undoped BFO samples show G-type antiferromagnetic behaviour and the
values of saturation magnetization (Ms) increased by increasing the Sr:Sm BFO doping concentrations at the A site of BFO lattice. The
magnitude of the dielectric constant (εr) and dielectric loss (tan δ) were increased gradually with applied frequency and by increasing
doping concentration in the BFO matrix. The significant enhancement in the dielectric parameters with increasing Sm and Sr  concentrations in BFO results in improved ferromagnetic properties that could be considered a promising candidate for some  advanced device applications.

Keywords

Bismuth ferrite Samarium Strontium Co-doping Dielectric Ferromagnetic
Kossar, S. (2023). Impact of (Sm, Sr) Co-Doping at Bi-Site on the Structural, Optical, Multiferroic and Dielectric Properties of Bismuth Ferrite Nanocomposites. Asian Journal of Chemistry, 35(12), 3081–3086. https://doi.org/10.14233/ajchem.2023.30681
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