Dipolar interaction effects in the thermally activated magnetic relaxation of two-dimensional nanoparticle ensembles

Abstract

The thermally activated magnetic relaxation in two-dimensional ensembles of dipolar interacting nanoparticles with large uniaxial perpendicular anisotropy is studied by a numerical method and within the mean-field approximation. The role that the correlation effects in the presence of a bias magnetic field and taking into account the lattice structure play in magnetic relaxation is revealed

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