Abstract

Computer experiments were carried out using the molecular dynamics method to study systems of magnetic ellipsoidal nanoparticles with two different dipole orientations inside each particle. Magnetic moments directed parallel or perpendicular to the main axis of rotation are considered. The initial susceptibility of the system is investigated and cluster analysis is carried out. The results revealed the influence of the orientation of the magnetic moment inside particles of the same shape on the self-organization of the system, its microscopic and macroscopic properties. For the case of orientation parallel to the main axis, the following was revealed: the initial susceptibility of particles whose shape is close to spherical increases faster and reaches higher values than in the case of ellipsoid particles. The perpendicular orientation of the magnetic moment does not affect the initial susceptibility as significantly as in the previous case: an increase in the magnetic moment leads to an increase in the initial susceptibility, while the shape of the particle has practically no effect on it.

中文翻译：

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磁性椭球纳米粒子系统的初始磁化率

摘要

使用分子动力学方法进行了计算机实验，研究了在每个粒子内部具有两个不同偶极子方向的椭圆形磁性纳米粒子的系统。考虑平行或垂直于旋转主轴线的磁矩。研究了系统的初始敏感性，并进行了聚类分析。结果揭示了相同形状的粒子内部的磁矩取向对系统的自组织，其微观和宏观特性的影响。对于平行于主轴的取向的情况，揭示了以下内容：形状接近球形的颗粒的初始磁化率比椭圆形颗粒的情况更快并且达到更高的值。