Tuning the dynamics in Fe3O4 nanoparticles for hyperthermia optimization

Hao Chen; David Billington; Edward Riordan; Jakob Blomgren; Sean Giblin; Christer Johansson; Sara Majetich

doi:10.1063/5.0017903

Tuning the dynamics in Fe3O4 nanoparticles for hyperthermia optimization

Hao Chen, David Billington, Edward Riordan, Jakob Blomgren, Sean Giblin, Christer Johansson, Sara Majetich

Department of Physics

Cardiff University

Research output: Contribution to journal › Article › peer-review

11 Citations (SciVal)

Abstract

The AC magnetic susceptibility (ACS) of Fe3O4 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.

Original language	English
Article number	073702
Journal	Applied Physics Letters
Volume	117
Issue number	7
DOIs	https://doi.org/10.1063/5.0017903
Publication status	Published - 17 Aug 2020

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10.1063/5.0017903

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abstract = "The AC magnetic susceptibility (ACS) of Fe3O4 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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AU - Billington, David

AU - Riordan, Edward

AU - Blomgren, Jakob

AU - Giblin, Sean

AU - Johansson, Christer

AU - Majetich, Sara

PY - 2020/8/17

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AB - The AC magnetic susceptibility (ACS) of Fe3O4 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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JO - Applied Physics Letters

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Tuning the dynamics in Fe3O4 nanoparticles for hyperthermia optimization

Abstract

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