Internal Temperature Measurements by X-Ray Diffraction on Magnetic Nanoparticles Heated by a High-Frequency Magnetic Field
Mesure par diffraction de rayons X de la température interne de nanoparticules magnétiques chauffées par un champ magnétique haute fréquence
Résumé
There is a theoretical and experimental controversy on the possibility for magnetic nanoparticles (MNPs) heated by high-frequency magnetic fields to reach a temperature much larger than the one of their environments. Here the internal temperature of magnetically heated magnetite MNPs is measured using the temperature dependence of their lattice parameter , and compared to the one of their environments, measured from reference non-magnetic particles. Within the uncertainty of our experimental methods, which is estimated to be below 5°C, the MNP temperature is the same as the one of their environments.
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