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Size dependent heating ability of CoFe2O4 nanoparticles in AC magnetic field for magnetic nanofluid hyperthermia

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Abstract

We investigated the size dependent magnetic properties and heating mechanism of spinel CoFe2O4 nanoparticles, which synthesized using the nonhydrolytic thermal decomposition method. The size of CoFe2O4 nanoparticles was arranged with the variation of solvent type, reflux time, and reflux temperature. The optimum size range was determined for magnetic fluid hyperthermia. The particles with 9.9 ± 0.3 nm average diameter have the highest heating ability in the AC magnetic field having 3.2 kA/m amplitude and 571 kHz frequency. The maximum specific absorption rate of 22 W/g was obtained for 9.9 ± 0.3 nm sized CoFe2O4 nanoparticles. The calculations and experimental results showed the dominancy of Brownian relaxation at the heat production of synthesized 9.9 ± 0.3 nm nanoparticles. In contrary, the magneto-heating in 5.4 ± 0.2 nm particles mainly originated from Neel relaxation.

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Acknowledgments

This work was partially supported by The Scientific and Technological Research Council of Turkey (project number TBAG-109T746).

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Authors and Affiliations

  1. Department of Nanotechnology and Nanomedicine, Hacettepe University, Beytepe, 06800, Ankara, Turkey

    Özer Çelik

  2. CNR-SPIN, Universitá di Napoli “Federico II”, Compl. Univ. di Monte S. Angelo, Via Cintia, I-80126, Napoli, Italy

    Musa Mutlu Can

  3. Faculty of Engineering and Natural Sciences, Nanotechnology Research and Application Center, Sabanci University, Tuzla, 34956, İstanbul, Turkey

    Musa Mutlu Can

  4. Department of Physics Engineering, Hacettepe University, Beytepe, 06800, Ankara, Turkey

    Tezer Firat

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  1. Özer Çelik
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  2. Musa Mutlu Can
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Correspondence to Musa Mutlu Can.

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Çelik, Ö., Can, M.M. & Firat, T. Size dependent heating ability of CoFe2O4 nanoparticles in AC magnetic field for magnetic nanofluid hyperthermia. J Nanopart Res 16, 2321 (2014). https://doi.org/10.1007/s11051-014-2321-6

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  • DOI: https://doi.org/10.1007/s11051-014-2321-6

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