DOE OSTI · 1803641
Tuning the dynamics in Fe 3 O 4 nanoparticles for hyperthermia optimization
Abstract
The AC magnetic susceptibility (ACS) of Fe 3 O 4 nanoparticles was measured between 10 kHz and 4 MHz at different temperatures and in applied DC fields. In this frequency range, magnetostatic interactions impact magnetization dynamics even for dilute assemblies. The ACS spectrum of relaxation frequencies changes both with temperature and the addition of a small DC field. Because both the relaxation peak frequency and amplitude can be tuned with the DC field, these results could be applied to magnetic hyperthermia applications to optimize heat delivery.
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Chen, Hao, Billington, David, Riordan, Edward, Blomgren, Jakob, Giblin, Sean R., Johansson, Christer, Majetich, Sara A.. 2020-08-17. Tuning the dynamics in Fe 3 O 4 nanoparticles for hyperthermia optimization. https://doi.org/10.1063/5.0017903
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