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Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticles

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Abstract

In this work, a successful synthesis of magnetic cobalt ferrite (CoFe2O4) nanoparticles is presented. The synthesized CoFe2O4 nanoparticles have a spherical shape and highly monodisperse in the selected solvent. The effect of different reaction conditions such as temperature, reaction time and varying capping agents on the phase and morphology is studied. Scanning transmission electron microscopy showed that the size of these nanoparticles can be controlled by varying reaction conditions. Both X-ray diffraction and energy dispersive X-ray spectroscopy corroborate the formation of CoFe2O4 spinel structure with cubic symmetry. Due to optimized reaction parameters, each nanoparticle was shown to be a single magnetic domain with diameter ranges from 6 to 16 nm. Finally, the magnetic investigations showed that the obtained nanoparticles are superparamagnetic with a small coercivity value of about 315 Oe and a saturation magnetization of 58 emu/g at room temperature. These results make the cobalt ferrite nanoparticles promising for advanced magnetic nanodevices and biomagnetic applications.

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Acknowledgements

This work has been carried out with the support of the Ministry of Higher Education, Scientific Research, and Professional Training (Enssup) (Morocco) and the National Center for Scientific and Technological Research (CNRST) through the grant Number: PPR15, and by the European H2020-MC-RISE-ENIGMA action (N°778072) and FEDER.

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Authors and Affiliations

  1. Institute of Nanomaterials and Nanotechnologies, Materials and Nanomaterials Center, MAScIR Foundation, B.P. 10100, Rabat, Morocco

    Z. Mahhouti, H. El Moussaoui, T. Mahfoud, M. Hamedoun & A. Benyoussef

  2. LaMCScI URAC 12, Département de Physique, Faculté des Sciences, Université Mohammed V, B.P. 1014, Rabat, Morocco

    Z. Mahhouti, A. El Kenz & A. Benyoussef

  3. LPMC EA2081, Université de Picardie Jules Verne, 33 Rue Saint Leu, 80000, Amiens, France

    Z. Mahhouti, M. El Marssi & A. Lahmar

  4. Hassan II Academy of Science and Technology, Rabat, Morocco

    A. Benyoussef

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  1. Z. Mahhouti
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Mahhouti, Z., El Moussaoui, H., Mahfoud, T. et al. Chemical synthesis and magnetic properties of monodisperse cobalt ferrite nanoparticles. J Mater Sci: Mater Electron 30, 14913–14922 (2019). https://doi.org/10.1007/s10854-019-01863-3

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