Abstract
The heating ability of mineral oil-based magnetic fluids with different magnetic particle concentrations is studied. The calorimetric measurements were carried out in an alternating magnetic field of 500 A · m−1 to 2500 A · m−1 amplitude and of 1500 kHz frequency. The revealed H n law-type dependence of the temperature increase rate, (dT/dt) t=0, on the amplitude of the magnetic field indicates the presence of superparamagnetic and partially ferromagnetic particles in the tested samples since n > 2. The specific absorption rate (SAR) defined as the rate of energy absorption per unit mass increases with a decrease of the volume fraction of the dispersed phase. This can be explained by the formation of aggregates in the samples with a higher concentration of magnetic particles.
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References
P. Kopčanský, K. Marton, L. Tomčo, M. Koneracká, M. Timko, I. Potočová, F. Herchl, in Proceedings of the Joint 15th Riga and 6th Pamir International Conference on Fundamental and Applied MHD, vol. 1 (2005), p. 329
Rosensweig R.E.: J. Magn. Magn. Mater. 252, 370 (2002)
Hergt R., Hiergeist R., Zeisberger M., Schüller D., Heyen U., Hilger I., Kaiser W.A.: J. Magn. Magn. Mater. 293, 80 (2005)
Herchl F., Kopčanský P., Timko M., Koneracká M., Marton K., Kolcunová I., Tomčo L.: Acta Phys. Pol. A 113, 569 (2008)
Raşa M.: Eur. Phys. J. E 2, 265 (2000)
Timko M., Dzarova A., Kovac J., Skumiel A., Józefczak A., Hornowski T., Gojżewski H., Zavisova V., Koneracka M., Sprincova A., Strbak O., Kopcansky P., Tomasovicova N.: J. Magn. Magn. Mater. 321, 1521 (2009)
Pshenichnikov A.F.: J. Magn. Magn. Mater. 145, 319 (1995)
Lao L.L., Ramanujan R.V.: J. Mater. Sci. Mater. Med. 15, 1061 (2004)
Charaziak K., Marecki M., Hornowski T., Józefczak A., Skumiel A.: Arch. Acoust. 33, 105 (2008)
Skumiel A.: J. Magn. Magn. Mater. 307, 85 (2006)
Skumiel A., Józefczak A., Hornowski T.: J. Phys. Conf. Ser. 149, 012111 (2009)
Halbreich A., Roger J., Pons J.N., Geldwerth D., Da Silva M.F., Roudier M., Bacri J.C.: Biochimie 80, 379 (1998)
Skumiel A., Józefczak A., Szlaferek A., Kowalski W., Timko M., Kopcansky P., Koneracka M.: Magnetohydrodynamics 44, 191 (2008)
Acknowledgments
The studies were supported by the Polish Ministry of Science and Higher Education grant N202 097 32/2406, and by the Project for Polish-Slovak Bilateral Cooperation No. SK-PL-0069-09/8158/2010. The authors gratefully acknowledge Professor Milan Timko from the Slovak Academy of Science (Košice) for samples of magnetic fluid.
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Open Access This is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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Skumiel, A., Hornowski, T. & Józefczak, A. Heating Characteristics of Transformer Oil-Based Magnetic Fluids of Different Magnetic Particle Concentrations. Int J Thermophys 32, 876–885 (2011). https://doi.org/10.1007/s10765-010-0799-4
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DOI: https://doi.org/10.1007/s10765-010-0799-4