L. Avazpour, M. Khajeh, M. R. Toroghinejad
Jul 15, 2015
Citations
1
Influential Citations
57
Citations
Journal
Journal of Alloys and Compounds
Abstract
Abstract The nanoparticles of cobalt ferrite were synthesized by using ethylene glycol and ethylenediaminetetraacetic acid precursors-based sol–gel method. In this study, special attention has been paid to investigate the role of the basic chemical parameters used in the manufacture of the cobalt ferrite by the sol–gel process, as well as the heat treatment on the structures, morphologies and magnetic properties of the obtained materials. These particles were structurally characterized by using X-ray diffraction and scanning electron microscopy and the results confirmed the formation of the spherically shaped nanoparticles of cobalt ferrite with a size of 14–39 nm. The synthetic method reported here has the capability of producing nanostructured pure single-phase CoFe 2 O 4 powder at a comparatively lower annealing temperature and offers the potential of a simpler, more cost-effective route than other reported methods. It has been found that EDTA and EG to total metal ions ratio and heat-treatment temperature have a noticeable influence on the properties of the resultant particles. The saturation magnetization varies from 50 to 83 emu/g and the coercive field ranges from 525 to 960 Oe that are suitable for magnetic recording purpose.