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Vol. 38 No. 10 (2026): Vol 38, Issue 10, 2026

Copyright (c) 2026 Rekha Parlikar, Subhash Wani, Smita More, Asha Nawpute, Rahul Chilwar, K.M. Jadhav

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Effect of Metal Nitrate to Fuel Ratio on the Structural, Morphological, Dielectric, Magnetic and Optical Properties of Cd2+-Doped Cobalt Ferrite Nanoparticles

https://doi.org/10.14233/ajchem.2026.36623
Rekha Parlikar
Department of Physics, Shri Yogeshwari Education Society’s Yogeshwari Mahavidyalaya, Ambajogai-431515, India
https://orcid.org/0000-0002-8942-6918
Subhash Wani
Department of Physics, R.G. Bagdia Arts, S.B. Lakhotia Commerce and R. Bezonji Science College, Jalna-431203, India
https://orcid.org/0009-0009-0834-264X
Smita More
Department of Physics, Maharashtra Institute of Technology, Chhatrapati Sambhajinagar-431010, India
https://orcid.org/0000-0001-7111-1996
Asha Nawpute
Department of Applied Science, Government Polytechnic, Ahilyanagar-414001, India
https://orcid.org/0000-0001-9164-4941
Rahul Chilwar
Department of Physics, Shri Yogeshwari Education Society’s Yogeshwari Mahavidyalaya, Ambajogai-431515, India
https://orcid.org/0009-0007-6384-3952
K.M. Jadhav
Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar-431001, India; Department of Physics, MGM University, Chhatrapati Sambhajinagar-431003, India
https://orcid.org/0000-0001-9911-411X

Corresponding Author(s) : Rekha Parlikar

rrparlikar2015@gmail.com

Asian Journal of Chemistry, Vol. 38 No. 10 (2026): Vol 38, Issue 10, 2026

Abstract

In this study, Co0.7Cd0.3Fe2O4 nanoparticles were synthesized using the sol-gel auto-combustion method by varying the metal nitrate-to-fuel (MN/F) ratio, with dextrose serving as the fuel. X-ray diffraction (XRD) analysis confirmed the formation of a single-phase cubic spinel structure. The lattice parameter initially increased with increasing MN/F ratio and subsequently decreased, whereas the crystallite size estimated using the Scherrer equation remained nearly constant at approximately 31 nm across all compositions. Fourier-transform infrared (FTIR) spectra exhibited characteristic absorption bands in the ranges of 574-548 cm–1 and 437-410 cm–1, corresponding to the metal–oxygen vibrations at the tetrahedral and octahedral sites, respectively. The Debye temperature increased as the MN/F ratio increased from 1:1.2 to 1:2, followed by a subsequent decrease. Field-emission scanning electron microscopy (FE-SEM) images revealed densely packed, predominantly spherical grains with slight agglomeration. Energy-dispersive X-ray spectroscopy (EDS) confirmed the presence of the expected constituent elements, namely cobalt, cadmium, iron, and oxygen. The dielectric properties exhibited an exponential decrease with the logarithm of frequency, with a pronounced dependence on the MN/F ratio. Furthermore, the optical band gap increased slightly from 1.78 to 1.83 eV. The saturation magnetization and related magnetic parameters increased with the MN/F ratio. These results establish the role of fuel content in modulating the structural, dielectric, optical and magnetic characteristics of Co0.7Cd0.3Fe2O4 nanoparticles.

Keywords

Cd doped cobalt ferrite Dextrose Metal nitrate Fuel XRD Dielectric VSM
(1)
Parlikar, R.; Wani, S.; More, S.; Nawpute, A.; Chilwar, R.; Jadhav, K. Effect of Metal Nitrate to Fuel Ratio on the Structural, Morphological, Dielectric, Magnetic and Optical Properties of Cd2+-Doped Cobalt Ferrite Nanoparticles. ajc 2026, 38, 2796-2808.
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