Models and simulations for analysis of domain sizes in ultrathin magnetic films

Abstract By micromagnetic simulations and analysis we study domain size and magnetization distribution evolution under changes of magnetic fields applied parallel to ultrathin film, H || . Domain wall energies and domain periods were calculated for H || =0 and H || close to the effective anisotropy field. The huge influence of the demagnetizing effect on the equilibrium domain period has been found. Simulated domain periods are in good agreement with those obtained analytically.