2008/06/06 by Andrew Kunz, Sarah C. Reiff · 39 citations
Engineering · Materials Science · Physics and Astronomy · #Anodic Oxide Films and Nanostructures #Core (optical fiber) #Domain (mathematical analysis) #Domain wall (magnetism) #Field (mathematics) #Fluid Dynamics and Thin Films #Micromagnetics #Nanopore and Nanochannel Transport Studies #Nanowire #Nucleation #Vortex #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.2976678
published in Applied Physics Letters 93(8) (American Institute of Physics) · 12 pages (3 figures)
arxiv created 2008/06/06 · openalex publication_date 2008/08/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Controlling domain wall motion is important due to the impact on the viability of proposed nanowire devices. One hurdle is slow domain wall speed when driven by fields greater than the Walker field due to nucleation of vortices in the wall. We present simulation results detailing the dynamics of these vortices including the nucleation and subsequent fast ejection of the vortex core leading to fast domain wall speeds. The ejection is due to the reversal of the core moments by an out-of-plane field. The technique can be used to produce domain walls of known orientation, independent of the initial state.