STRUCTURAL AND MAGNETIC PROPERTIES OF Mg-Co FERRITE NANOPARTICLES

摘要

A series of magnesium-substituted cobalt ferrite nanoparticles Co1-xMgxFe2O4 (0.0 = x = 1.0, step 0.2), have been synthesized using sol-gel auto-combustion method. The powders calcined at 600, 700, and 800 degrees C for 3h Various characterization methods were used to investigate the prepared powders such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and vibrating sample magnetometer (VSM). The XRD patterns of the synthesized samples confirm the formation of single phase spinal structured nanoparticles. FE-SEM image results show some agglomerated of spherical and polyhedral shape morphology. Moreover, the average crystallite size was found to be ranging from (55.146-68.434nm). Saturation magnetization (M-s), remanent magnetization (M-r), and coercivity (H-c) decreases with increase in Mg substitution as indicated by VSM at room temperature. Both the structural and magnetic properties of Mg-Co ferrite nanoparticles depend upon Mg2+ ions substitution.