A computer simulation of resonant microwave absorption in the two-dimensional array of spherical magnetic particles was performed. It is shown that the dipole-dipole interaction between the particles leads not only to the shift and broadening of the resonance signal , but also to substantial change in its shape. The resonance signal was simulated for the case when static magnetic field was perpendicular to planar lattice 10% filled by spherical magnetic particles. It is shown that the microwave absorption line has a bimodal shape, due to the presence of macroscopic inhomogeneities (cavities) in the particle distribution over the lattice. The distribution function of the dipolar field was numerically calculated for 10% filled two-dimensional square lattice.
магнитный резонанс, тонкие магнитные пленки, диполь-дипольное взаимодействие, математическое моделирование, magnetic resonance, magnetic thin film, the dipole-dipole interaction, computer simulation
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