THE PHASE-DIAGRAM OF DOMAIN-WALLS IN NARROW MAGNETIC STRIPS

A magnetic strip with rectangular cross section and infinite extension in the third, easy direction is used as a vehicle to explore numerica l micromagnetic algorithms. The manifold of (meta-)stable domain wall solutions is calculated as a function of the thickness of the strip an d of the relative strength of the magnetic anisotropy. With improved a lgorithms it became possible to calculate the complete phase diagram o f domain walls including all first- and second-order phase transitions between the walls. We took care to make sure that the obtained result s were independent of the chosen discretization.