Micromagnetic simulation of dynamic magnetic susceptibility and magnetostatic interaction fields of conical-shaped barium ferrite nanodot arrays
Micromagnetic simulation of dynamic magnetic susceptibility and magnetostatic interaction fields of conical-shaped barium ferrite nanodot arrays
复制标题
圆锥形钡铁氧体纳米点阵列动态磁化率和静磁相互作用场的微磁模拟
DOI：
10.1088/1361-6463/ab3137
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Zhang Yang
中科院分区：
文献类型：
--
作者：
Luo Jun;Zheng Hui;Deng Jiangxia;Chen Wei;Zheng Peng;Zheng Liang;Wu Qiong;Zhang Yang
基于三维面向对象的微磁框架（OOMMF），对锥形钡铁氧体纳米点阵列的动态磁化率谱和静磁场相互作用场进行了系统模拟。由于退磁场的非均匀分布，这种独特的结构表现出多谐振峰和分层谐振模式。此外，计算的相互作用场的圆锥形纳米点阵列说明的共振频率的依赖关系的距离和尺寸。因此，这种圆锥形纳米点阵列由于形成多共振峰而具有应用于微波吸收材料的潜力，并且需要精确控制决定共振频率的尺寸和距离。
In this paper, the dynamic susceptibility spectra and magnetostatic interaction fields of conical-shaped barium ferrite nanodot arrays were systematically simulated based on the 3D object-oriented micromagnetic framework (OOMMF). This unique structure exhibits multi-resonance peaks and the stratified resonance model due to the non-uniform distribution of the demagnetizing field. Furthermore, the calculated the interaction fields of the conical-shaped nanodot arrays illustrate the dependence of the resonance frequency on the distance and size. Consequently, this conical-shaped nanodots array has potential to be applied in microwave-absorbing materials due to the multi-resonance peaks formation and requires precise control of the size and distance, which determine the resonance frequency.