Browsing by Author "Benbrahim, N."

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    Morphological And Physico-chemical Characterization Of Mn-bi System Electrodeposited In A Mixed Sulfate-nitrate Bath
    (Oum-El-Bouaghi University, 2012) Boudinar, S.; Benbrahim, N.; Benfedda, B.; Kadri, A.
    n this paper, the electrodeposition kinetics of the Mn-Bi system in a mixed sulfate nitrate bath is reported. The plating bath is characterized by the presence of some additives like the boric acid and the ammonium sulfate. In this work, cyclic voltammetry is used to characterize reduction and dissolution potential of each element. The morphological and the chemical composition of the deposit were determined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The deposit has a heterogeneous appearance with different grain size, the energy dispersive spectroscopy (EDS) analysis reveals the presence of manganese and bismuth peaks with almost the same intensities.
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    Structural And Magnetic Properties Of Electrodeposited Nife Alloy On Silicon Nanowires.
    (Oum-El-Bouaghi University, 2014) Lamrani, S .; Guittoum, A.; Hadjersi, T.; Bouanik, S.; Mebarki, M.; Benbrahim, N.
    Perpendicular Silicon nanowires (SiNWs), having 20 micrometer in length, were fabricated by metal assisted chemical etching of n-type Si(100) wafers in aqueous HF-solution. In a second step, NiFe films were electrodeposited onto theses SiNWs. The structure and magnetic properties of as deposited NiFe layers were studied by X ray diffraction (XRD) and vibrating sample magnetometer (VSM). From X-ray diffraction, the FCC NiFe structure was evidenced with a lattice constant, a, equal to 3.5270 Å. From hysteresis curves, we compute the coercive field, Hc, values. We found that the Hc // values range from 102 Oe to 236 Oe.