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.
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