Abstract
Substitutions of cations were considered to be the main way for improving the performance of ferrite nanocrystalline structures. In this paper, non-magnetic and magnetic ions were conducted to substitute cobalt spinel ferrite nanoparticles CoFe2O4 NPs (CFO NPs). The studied Co1−xMxFe2O4; M = Zn, Cu, and Mn; x = 0.00, and 0.50) samples were synthesized through a cost-effective sol–gel technique. The outstanding properties of the samples are addressed using XRD, FTIR, the inductively coupled plasma optical emission spectrometer (ICP-OES), Raman analyses, HR-TEM, BET surface area analyzer, the energy-dispersive X-ray analysis spectra (EDX), and vibrating sample magnetometer (VSM). The Rietveld analysis and FTIR spectroscopic measurements revealed the successful synthesis of the cubic spinel phase. HR-TEM images reveal that the particles of all samples had spherical shape in the nanometer range. Moreover, the synthesized ZCFO NPs has the highest specific surface area of 26.87 m2/g than other samples. Interestingly, the determined Debye temperature from both elastic and infrared data was in a good conformity with each other. Finally, the values of saturation magnetization (Ms) increased from 39.128 emu/g for CCFO NPs to 68.419 emu/g for CFO NPs. The observed coercive field increased from 213.93 G for ZCFO NPs sample to 1914.85 G for CCFO NPs.
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Acknowledgements
The authors acknowledge Materials Science Unit, National Center for Radiation Research and Technology, Egypt, for supporting this study under the project “Synthesizing and Characterizations of Nanostructured Magnetic Materials.” Finally, the author Gharieb S. El-Sayyad would like to thank Prof. Mohamed Gobara and Chemical Engineering Department, Military Technical College (MTC), Egyptian Armed Forces, Cairo, Egypt for the continued support during this study.
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Abdel Maksoud, M.I.A., El-Sayyad, G.S., Abd Elkodous, M. et al. Controllable synthesis of Co1−x MxFe2O4 nanoparticles (M = Zn, Cu, and Mn; x = 0.0 and 0.5) by cost-effective sol–gel approach: analysis of structure, elastic, thermal, and magnetic properties. J Mater Sci: Mater Electron 31, 9726–9741 (2020). https://doi.org/10.1007/s10854-020-03518-0
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DOI: https://doi.org/10.1007/s10854-020-03518-0