One-Step Synthesis of CoFe2O4 Nano-Particles by Mechanical Alloying

Sedigheh Rashidi; Abolghasem Ataie

doi:10.4028/www.scientific.net/AMR.829.747

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 829One-Step Synthesis of CoFe2O4 Nano-Particles by...

One-Step Synthesis of CoFe₂O₄ Nano-Particles by Mechanical Alloying

Abstract:

In this study, cobalt ferrite (CoFe₂O₄) nanoparticles were synthesized by intensive mechanical alloying of CoCO₃ and α-Fe₂O₃powder using a planetary high energy ball mill in air without any subsequent heat treatment. Effects of milling time on the phase composition, morphology and magnetic properties of the powders were evaluated using XRD, FESEM and VSM techniques, respectively. XRD results indicated that single phase CoFe₂O₄nanoparticles with a mean crystallite size of 15 nm were synthesized after 25 hours of mechanical milling. FESEM images confirmed the formation of uniform nanoparticles and showed that the mean particle size of the milling products was decreased from 51 to 25 nm by increasing the milling time from 20 to 30 hours. VSM measurements of the sample milled for 25 hours revealed a saturation magnetization (M_s) of 52.19 emu/g and coercivity (H_c) of 831.95 Oe, which were higher than those of 20 hours milled sample.

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Periodical:

Advanced Materials Research (Volume 829)

Pages:

747-751

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https://doi.org/10.4028/www.scientific.net/AMR.829.747

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Online since:

November 2013

Authors:

Sedigheh Rashidi, Abolghasem Ataie*

Keywords:

Cobalt Ferrite, Magnetic Property, Mechanical Alloying, Nanoparticle

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* - Corresponding Author

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