Synthesis and magnetic investigation of cobalt ferrite nanoparticles prepared via a simple chemical precipitation method

In this research cobalt ferrite (cofe2o4) nano-crystalline powders were prepared by simple chemical precipitation method using cobalt sulfate. the cofe2o4 nanoparticles were characterized by x-ray diffraction, scanning electron microscopy and fourier transform infra-red spectroscopy. the crystallite size of cofe2o4 nanoparticles was calculated by debye-scherrer formula. the effect of precursor, capping agent, temperature and concentration on the morphology and particle size of the products was investigated. starch and gelatin as green, safe, water-soluble and cost- effective capping agents were used. alternative gradient field magnetometer confirms dominant influence of temperature on the morphology and magnetic domains. results approve magnetic samples exhibit either ferromagnetic or super-paramagnetic behavior.