Effect of the thermal treatment on the magnetic and structural properties of cobalt ferrite particles
Source abstract
Abstract
Abstract We herein report a study on the sol-gel synthesis of CoFe 2 O 4 and the effect of thermal treatment on the product outcome. Xerogels treated at 750, 800 and 850 °C had their structural and magnetic properties thoroughly studied, in order to correlate their synthesis conditions to the positions in which the cations are inserted in the spinel structure. X-ray diffractograms exhibit reflections representative of the spinel structure and demonstrate that the thermal treatment does not affect the lattice parameters of the material. Mossbauer spectroscopy studies indicate a very low inversion degree in the synthesized spinels, which is very unusual for CoFe 2 O 4 . A maximum in coercivity of 1405.2 Oersted was achieved for the sample treated at 800 °C.
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Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Electromagnetic wave absorption materials · Magneto-Optical Properties and Applications
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