A wide-frequency range AC magnetometer to measure the specific absorption rate in nanoparticles for magnetic hyperthermia
SANDRE, Olivier
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
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Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
Langue
en
Article de revue
Ce document a été publié dans
Journal of Magnetism and Magnetic Materials. 2014-11, vol. 368, p. 432-437
Elsevier
Résumé en anglais
Measurement of specific absorption rate (SAR) of magnetic nanoparticles is crucial to assert their potential for magnetic hyperthermia. To perform this task, calorimetric methods are widely used. However, those methods are ...Lire la suite >
Measurement of specific absorption rate (SAR) of magnetic nanoparticles is crucial to assert their potential for magnetic hyperthermia. To perform this task, calorimetric methods are widely used. However, those methods are not very accurate and are difficult to standardize. In this paper, we present AC magnetometry results performed with a lab made magnetometer that is able to obtain dynamic hysteresis loops in the AC magnetic field frequency range from 50 kHz to 1 MHz and intensities up to 24 kA m(-1) In this work, SAR values of maghemite nanoparticles dispersed in water are measured by AC magnetometry. The so obtained values are compared with the SAR measured by calorimetric methods. Both measurements, by calorimetry and magnetometry, are in good agreement. Therefore, the presented AC magnetometer is a suitable way to obtain SAR values of magnetic nanoparticles. (C) 2013 Elsevier B.V. All rights reserved.< Réduire
Mots clés en anglais
Specific Absorption Rate
Magnetic hyperthermia
AC magnetometer
Maghemite Nanoparticles
Origine
Importé de halUnités de recherche