NDLI: Mechanisms of hyperthermia in magnetic nanoparticles

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Mechanisms of hyperthermia in magnetic nanoparticles

Content Provider	Scilit
Author	Vallejo-Fernandez, G. Whear, O. Roca, Alejandro Gomez Hussain, Sarmad Timmis, Jonathan Ian Patel, V. Ogrady, Kerryann
Copyright Year	2013
Description	Journal: Journal of Physics D: Applied Physics We report on a theoretical framework for magnetic hyperthermia where the amount of heat generated by nanoparticles can be understood when both the physical and hydrodynamic size distributions are known accurately. The model is validated by studying the magnetic, colloidal and heating properties of magnetite/maghemite nanoparticles of different sizes dispersed in solvents of varying viscosity. We show that heating arising due to susceptibility losses can be neglected with hysteresis loss being the dominant mechanism. We show that it is crucial to measure the specific absorption rate of samples only when embedded in a solid matrix to avoid heating by stirring. However the data shows that distributions of both size and anisotropy must be included in theoretical models.
Related Links	http://iopscience.iop.org/0022-3727/46/31/312001/pdf/0022-3727_46_31_312001.pdf
ISSN	00223727
e-ISSN	13616463
DOI	10.1088/0022-3727/46/31/312001
Journal	Journal of Physics D: Applied Physics
Issue Number	31
Volume Number	46
Language	English
Publisher	IOP Publishing
Publisher Date	2013-08-07
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics D: Applied Physics Distributions of Both Size
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Acoustics and Ultrasonics Condensed Matter Physics Electronic, Optical and Magnetic Materials

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