Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Synthesis of CoFe2O4 Magnetic Nanoparticles by Thermal Decomposition

  • Soundararajan, D. (Department of Physics, Yeungnam University) ;
  • Kim, Ki Hyeon (Department of Physics, Yeungnam University)
  • Received : 2013.11.25
  • Accepted : 2013.12.17
  • Published : 2014.03.31
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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.

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