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Vol. 35 No. 9 (2023): Vol 35 Issue 9, 2023

Copyright (c) 2023 R. SAGAYARAJ

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Effect of ZnO on the Structural and Magnetodielectric Properties of MgFe2O4 Nanocomposite Prepared by Sol-Gel Method

https://doi.org/10.14233/ajchem.2023.28041
T. Veeramani
P.G. & Research Department of Physics, Thiru.Vi.Ka. Government Arts and Science (Affiliated to Bharathidasan University), Thiruvarur- 610003, India
https://orcid.org/0000-0001-7802-617X
C. VENKATARAJU
P.G. & Research Department of Physics, Thiru.Vi.Ka. Government Arts and Science (Affiliated to Bharathidasan University), Thiruvarur- 610003, India
https://orcid.org/0000-0002-5056-0554
V. PORKALAI
P.G. & Research Department of Physics, Thiru.Vi.Ka. Government Arts and Science (Affiliated to Bharathidasan University), Thiruvarur- 610003, India
https://orcid.org/0009-0006-3156-6826
R. SAGAYARAJ
P.G. & Research Department of Physics, St. Joseph’s College of Arts and Science (Autonomous) (Affiliated to Annamalai University), Cuddalore- 607001, India
https://orcid.org/0000-0003-3979-6846

Corresponding Author(s) : C. VENKATARAJU

Venkatarajuc40@gmail.com

Asian Journal of Chemistry, Vol. 35 No. 9 (2023): Vol 35 Issue 9, 2023

Abstract

Zinc oxide doped magnesium ferrite (Mg1-xZnxFe2O4) nanocomposite was synthesized using sol-gel method and demonstrated to have a cubic spinel structure, with a range of crystallite sizes (19-40 nm) and lattice constants (8.432-8.399 Å). The material was found  to have two prominent vibrational modes for tetrahedral (446 cm–1) and octahedral (584 cm–1). The dielectric constant was higher at  low frequencies and decreased at higher frequencies, while the saturation magnetization decreased (16 to 6 emu/g) gradually with an  increase in Zn2+, likely due to the presence of non-magnetic Zn2+. The magneto-dielectric constant was found to increase with the  magnetic field for MgFe2O4 and up to a magnetic field of 2000 Oe for the zinc magnesium nanocomposites, after which it decreased  for higher magnetic fields. A positive and negative change in magneto-capacitance as a function of the magnetic field was also  observed. The antibacterial activity suggests that the substitution of Zn2+ into magnesium ferrite can be an effective method for  improving antibacterial activity, with the potential to damage the bacterial membrane and other components through positively  charged ions and ROS generated by nanoparticles. Potential uses for this synthetic material include magneto-optical recording and  magnetic biosensors. 

Keywords

Zinc oxide Magnesium ferrite Sol-Gel method Dielectric constant Magneto dielectric Coercivity Ferrimagnetic
Veeramani, T., VENKATARAJU, C., PORKALAI, V., & SAGAYARAJ, R. (2023). Effect of ZnO on the Structural and Magnetodielectric Properties of MgFe2O4 Nanocomposite Prepared by Sol-Gel Method. Asian Journal of Chemistry, 35(9), 2069–2077. https://doi.org/10.14233/ajchem.2023.28041
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