Effect of core size distribution on magnetic nanoparticle harmonics for thermometry
Effect of core size distribution on magnetic nanoparticle harmonics for thermometry
复制标题
核尺寸分布对测温用磁性纳米粒子谐波的影响
DOI：
10.7567/1347-4065/ab5c9b
复制
发表时间：
2020-01-01
影响因子：
1.5
通讯作者：
Yoshida, Takashi
中科院分区：
文献类型：
--
作者：
Du, Zhongzhou;Sun, Yi;Yoshida, Takashi
我们研究了当Neel弛豫控制粒子的动态行为时，磁芯尺寸分布对磁性纳米粒子温度计(MNPT)性能的影响。数值模拟揭示了激励场强和磁芯尺寸分布对谐波幅值和相位随温度变化的影响。在MNPT中，当忽略磁芯尺寸分布时，灵敏度的场依赖关系与计算值有很大偏差。将这些模拟结果与实验结果进行了比较，得到了合理的一致。在设计最佳的《不扩散核武器条约》系统时，必须仔细考虑这些调查结果。(C)2019年日本应用物理学会
We investigated the effect of core size distribution on the performance of a magnetic nanoparticle thermometer (MNPT) in circumstances when Neel relaxation dominates the dynamic behavior of particles. Numerical simulations revealed the effects of excitation field strength and core size distribution on the temperature dependence of the amplitude and phase of harmonics. In MNPT, the field dependences of sensitivity deviated significantly from those calculated when the core size distribution was neglected. These simulation results were compared with those from experiments for which reasonable agreement was obtained. These findings must be carefully considered when designing an optimal MNPT system. (C) 2019 The Japan Society of Applied Physics