PL EN


Preferences help
enabled [disable] Abstract
Number of results
2012 | 121 | 5-6 | 1253-1256
Article title

Magnetodielectric Properties of Transformer Oil Based Magnetic Fluids

Content
Title variants
Languages of publication
EN
Abstracts
EN
This contribution is devoted to study of dielectric and magnetodielectric properties in transformer oil based magnetic fluid. The dielectric permittivity and their anisotropy at various mutual orientation electric (50 Hz) and magnetic field were shown at the different volume concentrations of nanoparticles at room temperature. The linear increase of dielectric constant with volume concentration was confirmed which is in good agreement with the theoretical Maxwell prediction. The dielectric anisotropy factor g(B, ω) is very close to g=1. The values of permittivity increased with the increase of volume fraction of magnetite nanoparticles. The highest value of anisotropy characterized by deviation of permittivity Δε=ε_{∥} - ε_{⊥} was found for the highest volume concentration which could mean that no aggregation of magnetite nanoparticles had appeared.
Keywords
EN
Contributors
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, 040 01 Kosice, Slovakia
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, 040 01 Kosice, Slovakia
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, 040 01 Kosice, Slovakia
author
  • Faculty of Aeronautic, Technical University in Kosice, 041 21 Kosice, Slovakia
author
  • Faculty of Electrical Engineering and Informatics, Technical University in Kosice, 042 00 Kosice, Slovakia
author
  • Faculty of Mining, Ecology, Process Control and Geotechnology, TU Kosice, Letna 9, 042 00 Kosice, Slovakia
author
  • Faculty of Mining, Ecology, Process Control and Geotechnology, TU Kosice, Letna 9, 042 00 Kosice, Slovakia
author
  • Politehnica University of Timisoara, Timisoara 300222, Romania
author
  • Politehnica University of Timisoara, Timisoara 300222, Romania
author
  • Laboratory of Magnetic Fluids, Romanian Academy - Timisoara Division, Timisoara, Romania
References
  • 1. A. Espurz, J.M. Alameda, J. Phys. D, Appl. Phys. 22, 1174 (1989)
  • 2. A.J. Mailfert, B. Nahounou, IEEE Trans. Magn. 16, 254 (1980)
  • 3. O. Derriche, L. Jorat, G. Noyel, J. Monin, J. Magn. Magn. Mater. 102, 155 (1991)
  • 4. A. Colteu, J. Magn. Magn. Mater. 39, 28 (1983)
  • 5. A. Cotae, J. Magn. Magn. Mater. 39, 85 (1983)
  • 6. P. Kopcansky, J. Cernak, P. Macko, D. Spisak, K. Marton, J. Phys. D 22, 1410 (1989)
  • 7. B.Z. Kaplan, D.M. Jacobson, Nature (London) 259, 654 (1976)); doi:10.1038/259654a0
  • 8. P.C. Fannin, B.K. Scaife, S.W. Charles, J. Magn. Magn. Mater. 122, 168 (1993)
  • 9. N.A. Yusuf, J. Shobaki, H. Abu-Safia, I. Abu-Aljarayesh, J. Magn. Magn. Mater. 149, 373 (1995)
  • 10. K. Marton, L. Tomčo, F. Herchl, P. Kopčanský, B. Dolník, M. Timko, M. Koneracká, in: Proc. DISEE, , ISBN 80-227-2470-X, Bratislava 2006, p. 16
  • 11. D. Bica, Rom. Repts. Phys. 47, 265 (1995)
  • 12. S. Holotescu, F.D. Stoian, O. Marinica, L. Kubicar, P. Kopcansky, M. Timko, J. Magn. Magn. Mater. 323, 1343 (2011)
  • 13. J.C. Maxwell, A Treatise on Electricity and Magnetism, 2nd ed., Vol. I, Clarendon Press, Oxford 1881, p. 435
  • 14. F. Herchl, K. Marton, L. Tomco, P. Kopcansky, M. Timko, M. Koneracka, I. Kolcunova, J. Phys., Condens. Matter 20, 204110 (2008)
  • 15. M.M. Radulescu, J. Magn. Magn. Mater. 85, 144 (1990)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n5-6p81kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.