Study of the structural and magnetic properties of (Ni1-xCoxFe2o4) prepared by the chemical co- precipitation thermal method

Abstract

Cobalt-doped nickel ferrites nanoparticles with chemical formula Ni1-xCoxFe2O4 for the x values, (x= 0.0, 0.1, 0.3, 0.5, and 0.7) were synthesized at temperature (700 ºC) and pH=11 using chemical co-precipitation thermal method. The powder XRD pattern confirms single-phase cubic structure and the average particle size calculated by Scherrer equation ranged between (16-29 nm) based on X-ray diffraction. The results of studying magnetic properties for the prepared compound showed, that the values of the ratio between Mr/Ms are less than 0.5, and some ratios showed the hysteresis loop in the form of a line indicating the transformation of the material to a state of superparamagnetic.