Heating Characteristics of Transformer Oil-Based Magnetic Fluids of Different Magnetic Particle Concentrations View Full Text


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Article Info

DATE

2010-07-30

AUTHORS

A. Skumiel, T. Hornowski, A. Józefczak

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 Hn 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. More... »

PAGES

876-885

References to SciGraph publications

  • 2004-10. Magnetic and hydrogel composite materials for hyperthermia applications in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN MEDICINE
  • 2000-07. Magnetic properties and magneto-birefringence of magnetic fluids in THE EUROPEAN PHYSICAL JOURNAL E
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    http://scigraph.springernature.com/pub.10.1007/s10765-010-0799-4

    DOI

    http://dx.doi.org/10.1007/s10765-010-0799-4

    DIMENSIONS

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