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Synthesis of CoFe2O4 Magnetic Nanoparticles by Thermal Decomposition
Journal of Magnetics, Volume 19, Number 1, 31 Mar 2014, Pages 5-9
Abstract
The amine functionalized CoFe2O4 nanoparticles were prepared by thermal decomposition method at reflux temperatures 160 °C and 172 °C. The obtained CoFe2O4 nanoparticles at 160 °C reflux temperature show aggregation free poly-dispersed nanoparticles in 4-15 nm range. In an elevated reflux temperature of 172 °C, CoFe2O4 show aggregated poly-dispersed nanoparticles in the size range of 20-46 nm. The saturation magnetization value at 300 K exhibited 51 emu/g at reflux temperature of 160 °C. However, the sample synthesized at an elevated temperature of 172 °C has shown a coercive field value of 560 Oe with saturation magnetization of 68 emu/g.
Keywords: CoFe2O4 nanoparticles; thermal decomposition; superparamagnetic
DOI: http://dx.doi.org/10.4283/JMAG.2014.19.1.005
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