Micromagnetic modeling of columnar thin films by ultra-dense arrays of nano-columns

We investigate the magnetostatic properties of nanostructured thin film through micromagnetic simulations using the NMAG modeling package. This work focuses on nanostructured columnar structures observed in the oblique growth of soft magnetic thin films which strongly modify the magnetic properties of the material. We report on how micromagnetic calculations give crucial information on the reversal mechanisms depending on the morphology of such a magnetic film. Micromagnetic simulations include periodic boundary conditions that are shown to be needed to describe correctly the magnetization configurations of nanostructured thin films.