Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1802547 | Journal of Magnetism and Magnetic Materials | 2009 | 4 Pages |
Abstract
Using the thermal decomposition of organometallics method we have synthesized high-quality, iron oxide nanoparticles of tailorable size up to ∼15 nm and transferred them to a water phase by coating with a biocompatible polymer. The magnetic behavior of these particles was measured and fit to a log-normal distribution using the Chantrell method and their polydispersity was confirmed to be very narrow. By performing calorimetry measurements with these monodisperse particles we have unambiguously demonstrated, for the first time, that at a given frequency, heating rates of superparamagnetic particles are dependent on particle size, in agreement with earlier theoretical predictions.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Marcela Gonzales-Weimuller, Matthias Zeisberger, Kannan M. Krishnan,