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http://dx.doi.org/10.4283/JMAG.2014.19.1.005

Synthesis of CoFe2O4 Magnetic Nanoparticles by Thermal Decomposition  

Soundararajan, D. (Department of Physics, Yeungnam University)
Kim, Ki Hyeon (Department of Physics, Yeungnam University)
Publication Information
Journal of Magnetics / v.19, no.1, 2014 , pp. 5-9 More about this Journal
Abstract
The amine functionalized $CoFe_2O_4$ nanoparticles were prepared by thermal decomposition method at reflux temperatures $160^{\circ}C$ and $172^{\circ}C$. The obtained $CoFe_2O_4$ nanoparticles at $160^{\circ}C$ reflux temperature show aggregation free poly-dispersed nanoparticles in 4-15 nm range. In an elevated reflux temperature of $172^{\circ}C$, $CoFe_2O_4$ 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 $160^{\circ}C$. However, the sample synthesized at an elevated temperature of $172^{\circ}C$ has shown a coercive field value of 560 Oe with saturation magnetization of 68 emu/g.
Keywords
$CoFe_2O_4$ nanoparticles; thermal decomposition; superparamagnetic;
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