We used micromagnetic simulations to develop a device for the injection of localised 360° domain walls into a magnetic thin film nanostripe. In our simulations two current profiles, step and staircase, are applied to two non-parallel wires placed in close proximity to, but not in electrical contact with, the magnetic nanostripe. We show that for current densities of ∼1012 A/m2 and experimentally achievable device dimensions, the magnetic fields generated by these current pulses are of sufficient strength to cause the nucleation of stable and localised 360° domain walls through the Zeeman coupling followed by Landau-Lifshitz-Gilbert relaxation dynamics.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)