Publication Type
Journal
Journal Name
Journal of Magnetism and Magnetic Materials
Publication Date
Page Numbers
42 to 48
Volume
432
Abstract
A new scaling approach has been proposed for the spin exchange and the dipole-dipole interaction energy as a function of the system size. The computed scaling laws are used in atomistic Monte Carlo simulations of magnetic moment evolution to predict the transition from single domain to a vortex structure as the system size increases. The width of a 180° domain wall extracted from the simulated structures are in close agreement with experimentally values for an F-Si alloy. The transition size from a single domain to a vortex structure is also in close agreement with theoretically predicted and experimentally measured values for Fe.
