单畴单分散FeCo纳米粒子的磁热疗：Stoner-Wohlfarth行为和大损失的证据
Magnetic hyperthermia in single-domain monodisperse FeCo nanoparticles: Evidences for Stoner-Wohlfarth behaviour and large losses
摘要：
我们报告15 nm单分散FeCo纳米粒子（NP）的胶体溶液上的高温测量。作为磁场的函数的损耗显示出急剧增加，然后是平台，这是铁磁单畴NP的损耗所预期的。的矫顽场的频率依赖性推导出从热疗测量，并与一个简单的模型的非相互作用的纳米粒子的定量协议。测得的损失（1.5 mJ/g）相比，最高的文献，虽然饱和磁化强度的纳米粒子是远远低于散装的。
英文摘要：
We report on hyperthermia measurements on a colloidal solution of 15 nm monodisperse FeCo nanoparticles (NPs). Losses as a function of the magnetic field display a sharp increase followed by a plateau, which is what is expected for losses of ferromagnetic single-domain NPs. The frequency dependence of the coercive field is deduced from hyperthermia measurement and is in quantitative agreement with a simple model of non-interacting NPs. The measured losses (1.5 mJ/g) compare to the highest of the literature, though the saturation magnetization of the NPs is well below the bulk one.
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