Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5437568 | Ceramics International | 2017 | 8 Pages |
Abstract
Nano cobalt ferrites (CoFe2O4) were co-precipitated at various reaction temperatures (60, 70 and 80 °C) for 1 h. The reaction temperature greatly influenced the crystallite size and the magnetic behaviours of the nano CoFe2O4. The mean crystallite size ranged from 9 to 15 nm with the increase in the reaction temperature and the intensity of metal oxide vibrations at 568-550 cmâ1 were also inclined. The synthesized samples were in the stoichiometric ratio of 1:2 (Co:Fe) with roughly spherical morphology. The synthesized cobalt nanoferrites exhibited ferromagnetism at room temperature and 5 K, and the saturation magnetization increased from 6.4 to 20 emu/g with the crystallite size.
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Authors
T. Prabhakaran, R.V. Mangalaraja, Juliano C. Denardin, J.A. Jiménez,