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Vol. 37 No. 10 (2025): Vol 37 Issue 10, 2025

Copyright (c) 2025 Devika M, G. Vinod, Mandava Venkata Basaveswara Rao, P. Baby Sudha Lakshmi

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

Structural, Morphological, Optical and Magnetic Investigations of Pr3+-Substituted Mn-Cd Spinel Ferrite Nanoparticles

https://doi.org/10.14233/ajchem.2025.34414
M. Devika
Department of Chemistry, Krishna University, Machilipatnam-521004, India
https://orcid.org/0009-0001-1908-1942
G. Vinod
Department of Humanities & Sciences (Physics), Teegala Krishna Reddy Engineering College, Medbowli, Meerpet, Hyderabad-500097, India
https://orcid.org/0000-0002-3163-1003
Mandava Venkata Basaveswara Rao
Department of Chemistry, Krishna University, Machilipatnam-521004, India
https://orcid.org/0000-0001-6173-2545
P. Baby Sudha Lakshmi
Department of Chemistry, Dr. M.R.A.R. College of P.G. Studies, Nuzvid-521201, India
https://orcid.org/0000-0003-3923-5942

Corresponding Author(s) : Mandava Venkata Basaveswara Rao

vbrmandava@yahoo.com

Asian Journal of Chemistry, Vol. 37 No. 10 (2025): Vol 37 Issue 10, 2025

Abstract

Spinel nano-ferrites offer a promising photocatalytic approach for environmental remediation. Employing a combustion method, a new spinel Mn0.5Cd0.5PrxFe2-xO4 (x = 0-5) nano-ferrite as photocatalysts have been developed for the degradation of Congo red dye. P-XRD, FTIR, HR-TEM, UV-VIS, VSM and photon-driven catalytic processes for the degradation of Congo red dye have been employed to analyze each of the Mn0.5Cd0.5PrxFe2-xO4 (x = 0-5) nano-ferrites. P-XRD analysis was used to determine the lattice strain and crystallite size of each nano-ferrite sample, revealing the crystallite sizes ranging from 23.11 to 32.84 nm. The total surface areas, densities, bond lengths and hopping lengths of each Pr-sample nanocrystal were also determined and calculated. FTIR analysis revealed two prominent frequency bands at 602 and 425 cm–1, characteristic of spinel ferrites. The particle size and distribution of the nano-ferrites in the Pr-0 to Pr-5 samples were examined using FE-SEM, which showed spherical Pr-Mn-Cd nanoparticles with a tendency to aggregate. The direct allowed bandgap (Eg) values for Pr-0 through Pr-5 were estimated from Tauc plots as 2.66, 2.45, 2.34, 2.22, 2.10 and 1.97 eV, respectively. The variation in bandgap (Eg) values can be attributed to the combined effects of doping and particle size. Magnetic measurements showed a systematic decrease in saturation magnetization (Ms), magnetocrystalline anisotropy (K1), coercivity (Hc) with Pr-substitution.

Keywords

Spinel ferrite nanoparticles Pr-Mn-Cd ferrites PL spectra Soft magnet
(1)
Devika, M.; Vinod, G.; Rao, M. V. B.; Sudha Lakshmi, P. B. Structural, Morphological, Optical and Magnetic Investigations of Pr3+-Substituted Mn-Cd Spinel Ferrite Nanoparticles. ajc 2025, 37, 2514-2524.
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