Tuning the dynamics in Fe3O4 nanoparticles for hyperthermia optimization

被引：0
|
作者：
Chen, Hao [1 ]
Billington, David [2 ]
Riordan, Edward [2 ]
Blomgren, Jakob [3 ]
Giblin, Sean R. [2 ]
Johansson, Christer [3 ]
Majetich, Sara A. [1 ]
机构：
[1] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA
[2] Cardiff Univ, Dept Phys & Astron, Cardiff CF24 3AA, Wales
[3] RISE Res Inst Sweden, Dept Smart Hardware, SE-41133 Gothenburg, Sweden
来源：
APPLIED PHYSICS LETTERS | 2020年 / 117卷 / 07期
基金：
英国工程与自然科学研究理事会;
关键词：
FERROFLUIDS; SPIN;
D O I：
10.1063/5.0017903
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The AC magnetic susceptibility (ACS) of Fe3O4 nanoparticles was measured between 10kHz and 4MHz 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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页数：4
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