Abstract
The Co substitution in Ni-Zn ferrites with respect to their structural and magnetic properties has been investigated in favor to select a material for future electromagnetic interference (EMI) shielding application purpose. Ni0.6−x Zn0.4Co x Fe2O4 (x = 0, 0.03, 0.09, 0.27) nanoparticles were synthesized using a sol-gel method and annealed at 700∘C. The prepared Ni0.6−x Zn0.4Co x Fe2O4 samples were characterized for their structural, stoichiometric, and magnetic properties. X-ray diffraction patterns reveal the formation of single-phase spinel cubic structure formed at x = 0.27. The influence of Co do** on structural properties of Ni-Zn ferrite was examined with X-ray diffraction and field emission scanning electron microscopy. The stoichiometry of prepared samples has also been examined by energy-dispersive X-ray spectroscopy. The magnetic behavior was studied using a vibrating sample magnetometer at room temperature. The variations in values of saturation magnetization were explained on the basis of spin canting effect imparted by hematite (α-Fe2O3) phase with spinel phase. Ni0.6−x Zn0.4Co x Fe2O4 with x = 0.27 possesses best saturation magnetization and can be useful in EMI shielding material.
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We are very thankful for the financial aid to this work provided by the Jaypee University of Information Technology, Waknaghat, Solan, Himachal Pradesh, India.
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Kumar, R., Kumar, H., Kumar, M. et al. Enhanced Saturation Magnetization in Cobalt Doped Ni-Zn Ferrite Nanoparticles. J Supercond Nov Magn 28, 3557–3564 (2015). https://doi.org/10.1007/s10948-015-3192-5
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DOI: https://doi.org/10.1007/s10948-015-3192-5