Fast domain wall motion in nanostripes with out-of-plane fields
arXiv:0806.1205 · doi:10.1063/1.2976678
Abstract
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.
12 pages (3 figures)
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Cited by in corpus (5)
- Fabrication, detection and operation of a three-dimensional nanomagnetic conduit
- Statics and field-driven dynamics of transverse domain walls in biaxial nanowires under uniform transverse magnetic fields
- Criterion for transformation of transverse domain wall to vortex or antivortex wall in soft magnetic thin-film nanostripes
- RC-circuit-like dynamic characteristic of the magnetic domain wall in ferromagnetic nanowires
- Anti-vortex dynamics in magnetic nanostripes