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Masrour R.,App Quality | Masrour R.,Laboratoire of Magnetism and the Physics of the High Energies | Mounkachi O.,Institute of Nanomaterials and Nanotechnologies | El Moussaoui H.,Institute of Nanomaterials and Nanotechnologies | And 7 more authors.
Journal of Superconductivity and Novel Magnetism | Year: 2013

Synthesis optical and magnetic of nearly monodisperse Fe3O 4 nanoparticles through a simple coprecipitation method was studied in this work, Well-defined disperse nanospheres with an average size of 10 nm have been synthesized without any surfactant. Structural optical and magnetic properties were investigated by means of X-ray diffraction, transmission electron microscopy (TEM), UV-visible measurement, and superconducting quantum interference device (SQUID). The critical and blocking temperature, saturation magnetization, magnetic remanence, and coercive field of Fe3O 4 nanoparticles are obtained at room temperature. © 2013 Springer Science+Business Media New York.


Masrour R.,App Quality | Masrour R.,Laboratoire of Magnetism and the Physics of the High Energies | El Moussaoui H.,Laboratoire of Magnetism and the Physics of the High Energies | El Moussaoui H.,Institute of Nanomaterials and Nanotechnologies | And 8 more authors.
Journal of Superconductivity and Novel Magnetism | Year: 2014

Polycrystalline Ni0.5Zn0.5Fe2O4 ferrites have been prepared using the solid-state reaction technique. The structure of ferrite was measured using an X-ray diffractometer (XRD). It is shown that the structure of Ni0.5Zn0.5Fe2O 4 ferrites is a single spinel structure. The magnetic properties of the samples were tested at room temperature by a superconducting quantum interference device (SQUID) to determine magnetic properties versus temperature and applied magnetic field. Based on first-principles spin-density functional calculations, using the Korringa-Kohn-Rostoker method (KKR) combined with the coherent potential approximation (CPA), the ferromagnetic and half-metallic behaviors was observed with LDA (local density approximation) and LDA-SIC (local density approximation-self-interaction correction) approximation. © 2013 Springer Science+Business Media New York.

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