360° domain wall injection into magnetic thin films

A. L. Gonzalez Oyarce, J. Llandro, C. H.W. Barnes

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number222404
JournalApplied Physics Letters
Volume103
Issue number22
DOIs
Publication statusPublished - 2013 Nov 25
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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