Characterization and magnetic heating of commercial superparamagnetic iron oxide nanoparticles

S.A. Rovers, L.A.M. van der Poel, C.H.J.T. Dietz, J.J.P.A.W. Noijen, R. Hoogenboom, M.F. Kemmere, K. Kopinga, J.T.F. Keurentjes

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Abstract

Commercially available superparamagnetic iron oxide nanoparticles (SPION) of 12 nm are characterized with respect to their physical, magnetic, and heating properties in an alternating magnetic field. For this purpose, a specialized magnetic field setup has been developed and characterized. Particles of the waterbased ferrofluid, EMG705, and particles coated for a hydrocarbon carrier have been investigated using several techniques, including transmission electron microscopy and superconducting quantum interference device magnetometry, showing the superparamagnetic behavior of the particles. The specific absorption rate of the particles has been confirmed to have square dependency on the magnetic field strength. The difference in heating of the two samples could be explained by the difference in particles size distribution.
Original languageEnglish
Pages (from-to)14638-14643
JournalJournal of Physical Chemistry C
Volume113
Issue number33
DOIs
Publication statusPublished - 2009

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