Dynamics of the magnetic nanoparticles lattice in an external magnetic field

In this paper the processes of quasi-static and dynamic magnetization reversal are studied for square lattices of magnetic nanodipoles with cubic crystallographic anisotropy. The response of the total magnetic moment to the magnetic field pulse of different duration and polarization is determined for different orientational configurations of dipoles. The oscillation modes of the total magnetic moment under alternating magnetic field are also investigated. Regular, quasiperiodic and chaotic oscillatory regimes have been found. The conditions under which oscillations propagate from individual dipoles to the whole system have been revealed.