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Vol. 35 No. 5 (2023): Vol 35 Issue 5, 2023

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Structural, Optical, Magnetic and Dielectric Properties of CoFe12O19 Synthesized in the Presence of Moringa oleifera Flower Extract

https://doi.org/10.14233/ajchem.2023.27831
Abhishek A. Gor
1Institute of Science, Nirma University, Ahmedabad-382481, India 2Department of Physics, School of Energy Technology, Pandit Deendayal Energy University, Raisan, Gandhinagar-382426, India
https://orcid.org/0000-0002-6718-3564
Mrunali Jani
Department of Physics, School of Energy Technology, Pandit Deendayal Energy University, Raisan, Gandhinagar-382426, India
https://orcid.org/0009-0002-4669-9518
Anup V. Sanchela
Department of Physics, School of Energy Technology, Pandit Deendayal Energy University, Raisan, Gandhinagar-382426, India
https://orcid.org/0000-0003-2391-6815
N.M. Devashrayee
Institute of Technology, Nirma University, Ahmedabad-382481, India
https://orcid.org/0000-0001-8161-1361
Rajshree B. Jotania
Department of Physics, Electronics and Space Science, University School of Sciences, Gujarat University, Ahmedabad-380009, India
https://orcid.org/0000-0001-5015-2684
Chetna C. Chauhan
1Institute of Science, Nirma University, Ahmedabad-382481, India 3Institute of Technology, Nirma University, Ahmedabad-382481, India
https://orcid.org/0000-0002-8773-4175

Corresponding Author(s) : Abhishek A. Gor

abhishekgor5@gmail.com

Asian Journal of Chemistry, Vol. 35 No. 5 (2023): Vol 35 Issue 5, 2023

Abstract

In this study, a unique approach was employed to synthesize M-type cobalt hexaferrite (CoFe12O19) using Moringa oleifera flower extract as a green capping agent. For 3 h, the calcination procedure was conducted at 1100 ºC. It was found that the structural, optical, microstructural, magnetic and dielectric properties of the generated cobalt hexaferrite were considerably affected by the presence of phytochemicals in floral extract. To evaluate the structural, surface morphological, optical, magnetic and dielectric properties of prepared ferrite, a variety of characterization techniques including FT-IR, XRD, UV-Vis, SEM, VSM and dielectric techniques were applied. The XRD analysis showed the formation of a hexagonal phase along with hematite and cobalt ferrite, while the surface morphology showed hexagonal shaped platelet structure. With a saturation magnetization (Ms) of 14.94 emu/g and a coercivity (Hc) of 1790.9 Oe, the CoFe12O19 powder demonstrated a multidomain nature, which is a magnetically hard material. Furthermore, the energy bandgap of the cobalt ferrite was observed to be 2.01 eV. Low frequency dielectric measurement was carried out at room temperature and ε'max ~ 46 found at 30 Hz with tan δ equals to 0.103. The dielectric behaviour with frequency follows the Koop’s model and Maxwell-Wagner theory. One semicircle arc was observed in Cole-Cole plot.

Keywords

Moringa oleifera CoFe12O19 hexaferrite Green synthesis approach Dielectric measurements
Gor, A. A., Jani, M., Sanchela, A. V., Devashrayee, N., Jotania, R. B., & Chauhan, C. C. (2023). Structural, Optical, Magnetic and Dielectric Properties of CoFe12O19 Synthesized in the Presence of Moringa oleifera Flower Extract. Asian Journal of Chemistry, 35(5), 1257–1263. https://doi.org/10.14233/ajchem.2023.27831
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