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Size-Dependent Relaxation Properties of Monodisperse Magnetite Nanoparticles Measured Over Seven Decades of Frequency by AC Susceptometry
University of Washington, USA.
University of Washington, USA.
RISE, Swedish ICT, Acreo.
RISE, Swedish ICT, Acreo.
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2013 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 49, p. 3441-3444Article in journal (Refereed) Published
Abstract [en]

Magnetic relaxation is exploited in innovative biomedical applications of magnetic particles such as magnetic particle imaging (MPI), magnetic fluid hyperthermia, and bio-sensing. Relaxation behavior should be optimized to achieve high performance imaging, efficient heating, and good SNR in bio-sensing. Using two AC susceptometers with overlapping frequency ranges, we have measured the relaxation behavior of a series of monodisperse magnetic particles and demonstrated that this approach is an effective way to probe particle relaxation characteristics from a few Hz to 10 MHz, the frequencies relevant for MPI, hyperthermia, and sensing.

Place, publisher, year, edition, pages
2013. Vol. 49, p. 3441-3444
Keywords [en]
magnetic nanoparticles, AC susceptometry
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-31964DOI: 10.1109/TMAG.2013.2239621Scopus ID: 2-s2.0-84880798655OAI: oai:DiVA.org:ri-31964DiVA, id: diva2:1151822
Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2019-10-10Bibliographically approved

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