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Vol. 33 No. 5 (2021): Vol 33 Issue 5, 2021

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Effect of Al Doping on Magnetic Properties of Co-Mn Nanoferrites Synthesized via Citrate-Gel Method

https://doi.org/10.14233/ajchem.2021.23152
Shankar Barapati
Department of Chemistry, University College of Science, Osmania University, Hyderabad-500007, India
M. Raghasudha
Department of Chemistry, National Institute of Technology Warangal, Warangal-506004, India
P. Veera Somaiah
Department of Chemistry, University College of Science, Osmania University, Hyderabad-500007, India

Corresponding Author(s) : M. Raghasudha

raghas13chem@nitw.ac.in

Asian Journal of Chemistry, Vol. 33 No. 5 (2021): Vol 33 Issue 5, 2021

Abstract

The structural and magnetic properties of aluminium substituted Co-Mn nanoferrites synthesized via a chemical route viz. citrate-gel autocombustion method have been reported. Aluminium content has been varied from x=0 to x=1 with an increment of 0.2 in Co0.75Mn0.25AlxFe2-xO4. The structural confirmation was done with the basic characterization techniques such as XRD study, FTIR spectroscopic and the surface morphology was examined using SEM and EDX spectroscopic analysis. To study the optical absorption behaviour of the prepared ferrites, UV-visible spectral analysis was carried out. XRD analysis established the formation of cubic spinel structure of the materials with the average crystallite size of 15.5 nm to 19.94 nm. FTIR spectra has shown two absorption peaks that are characteristic of spinel nano ferrites. From the UV-visible spectral data, energy band gap (Eg) values were evaluated. The data witnessed an increase in the Eg value of the ferrite by doping of Al3+ ion into the ferrite. Room temperature magnetization measurements were carried out before and after aluminium doping in the samples using vibrating sample magnetometer. It was revealed that the substitution of aluminium in the lattice has modified the material into a soft magnetic material. Consequently, they find applications in transformer and motor cores.

Keywords

Nanoferrites Citrate-gel Autocombustion method Magnetization measurements
Barapati, S., Raghasudha, M., & Veera Somaiah, P. (2021). Effect of Al Doping on Magnetic Properties of Co-Mn Nanoferrites Synthesized via Citrate-Gel Method. Asian Journal of Chemistry, 33(5), 1125–1132. https://doi.org/10.14233/ajchem.2021.23152
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