Morphologic, structural, and magnetic characterization of cobalt ferrite nanoparticles synthesized at different temperatures
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Published:2021-09-01
Issue:9
Volume:9
Page:399-405
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ISSN:2411-2933
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Container-title:International Journal for Innovation Education and Research
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language:
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Short-container-title:IJIER
Author:
Alberton Kétlin Santos,Monteiro Liza Bruna Reis,Moraes Anne Beatriz Ramos,Bucar Raynara Vitória dos Santos Paiva,Araujo Maicon Maciel Ferreira de,Junior Moacy José Stoffes,Stein Cléver Reis
Abstract
In this study we report on the synthesis and characterization of cobalt ferrite (CoFe2O4) nanoparticles (NPs), synthesized by chemical co-precipitation in alkaline medium. Two samples were synthesized at two different temperatures, 35 and 90 oC. Both samples were characterized by Transmission Electron Microscopy (TEM), x-ray diffraction (XRD), and room-temperature (RT) magnetization. Two samples showed superparamagnetic behavior (SPM) at RT. TEM reveals morphological mean diameter increasing 5.8 nm to 10.4 nm, with the increase of the co-precipitation temperature. XRD confirm the inverse cubic spinel structure. The RT magnetization curves were analyzed by the first-order Langevin function averaged out by a lognormal distribution function of magnetic moments. This analysis showed saturation magnetization and magnetic moment increases from 60.2 to 74.8 emu/g and from 3.9 x 103 to 8.2 x 103 mB, respectively.
Publisher
International Journal for Innovation Education and Research
Reference23 articles.
1. E. Tirosh, G. Shemer, and G. Markovich, “Optimizing cobalt ferrite nanocrystal synthesis using a magneto-optical probe,”. Chem. Mater. 18, 465 – 470 (2006). 2. H. Gu, K. Xu, Z. Yang, C. K. Chang, and B. Xu, “Synthesis and cellular uptake of porphyrin decorated iron oxide nanoparticles-a potential candidate for bimodal anticâncer therapy,” Chem. Commun. 34, 4270-4272 (2005). 3. P. C. Morais, E. C. O. Lima, “Técnicas de preparação de nanopartículas magnéticas e fluidos magnéticos,” In: N. Duran, L. H. C. Mattoso, and P. C. Morais, (Org). “Nanotecnologia: Introdução, preparação e caracterização de nanomateriais e exemplos de aplicação,” 1 ed. São Paulo: artliber, 1, 83 (2006). 4. G. Baldi, D. Bonacchi, C. Innocenti, G. Lorenzi, and C. Sangregorio, “Cobalt ferrite nanoparticles: The control of the particle size and surface state and their effects on magnetic properties,” J. Magn. Magn. Mater. 311, 10-16 (2007). 5. U. Luders, A. Barthelemy, M. Bibes, K. Bouzehouane, S. Fusil, E. Jacquet, J. P. Contour, J. F. Bobo, J. Fontcuberta, and A. Fert, “NiFe2O4: A versatile spinel material brings new opportunities for spintronics,” Adv. Mater. 18, 1733-1736 (2006).
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