University of Kashan Journal of Nanostructures 2251-7871 6 2 2016 04 01 Synthesis and magnetic investigation of cobalt ferrite nanoparticles prepared via a simple chemical precipitation method 127 131 15490 10.7508/jns.2016.02.004 EN Kambiz Hedayati Department of Science, Arak University of Technology, Arak, Iran 0000-0002-2875-0255 Sara Azarakhsh Department of Science, Arak University of Technology, Arak, Iran Davood Ghanbari Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran Journal Article 2016 06 15 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. https://jns.kashanu.ac.ir/article_15490_283979444e312b7afa6250dab5e07a0a.pdf