Developments of cobalt ferrite nanoparticles prepared by the sol–gel process

In the phase of the study reported, the sol–gel technique was followed in the preparation of cobalt ferrite amorphous powder following the same procedure which was selected as the best approach as described in a previous study. It was assumed that there must be a correlation between the heat treatme...

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Bibliographic Details
Published in:Ceramics international 2014-01, Vol.40 (1), p.1147-1154
Main Authors: Sajjia, M., Oubaha, M., Hasanuzzaman, M., Olabi, A.G.
Format: Article
Language:English
Subjects:
A. Sol–gel
C. Magnetic properties
Cobalt ferrite nanoparticles
Heat treatment
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Summary:In the phase of the study reported, the sol–gel technique was followed in the preparation of cobalt ferrite amorphous powder following the same procedure which was selected as the best approach as described in a previous study. It was assumed that there must be a correlation between the heat treatment operational parameters and the structural properties of the material being synthesized. Similarly, it was understood that some heat treatment is necessary to completely decompose the organic and nitrate contents present in the amorphous powder. Having ensured that the heat treatment parameters could be changed without producing a material with poorer properties, it was then possible to produce batches of powders using milder conditions in the heat treatment operation. The particle size distributions of these new batches of nanoparticles were estimated to be in the range 7–28nm and since the results showed promise, their magnetic properties were also determined.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2013.06.116