Structure and Magnetic Properties of Ga Substituted Ni-Ferrites

Ahmad Amirabadizadeh; Zobedeh Momeni Larimi; Saeideh Eghbali

doi:10.4028/www.scientific.net/AMM.446-447.68

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 446-447Structure and Magnetic Properties of Ga...

Structure and Magnetic Properties of Ga Substituted Ni-Ferrites

Abstract:

Nanocrystalline Ga doped nickel ferrite [(NiFe_2-xGa_xO₄ (x=0.0, 0.1, 0.3, 0.5 and 0.7)] powders have been synthesized by sol-gel auto-ignition method and the effect of non-magnetic gadillum content on the nanosize particles and magnetic properties has been studied. The X-ray diffraction (XRD) revealed that the powders obtained are single phase with spinel structure. The calculated grain size from XRD data have been verified using transmission electron microscopy (TEM). TEM photograph shows that the powders consist of nanometer sized grain. The size of nanoparticles decreases as the non magnetic Ga content increases. Magnetic hysteresis loops were measured at room temperature with maximum applied magnetic field of 20 KOe. As Ga content increases, the measured magnetic hysteresis curves became border and saturation magnetization (M_S) increased up to x= 0.3 and further increase of x leads the magnetization to decrease. The results are explained according to the assumed cation distribution.

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Applied Mechanics and Materials (Volumes 446-447)

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68-72

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https://doi.org/10.4028/www.scientific.net/AMM.446-447.68

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Online since:

November 2013

Authors:

Ahmad Amirabadizadeh, Zobedeh Momeni Larimi, Saeideh Eghbali

Keywords:

Magnetic Property, Nickel Ferrite, Particle Size, Sol-Gel

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