Publication details for Professor Del AtkinsonBurn, D.M. & Atkinson, D. (2016). Effective pinning energy landscape perturbations for propagating magnetic domain walls. Scientific Reports 6: 34517.
- Publication type: Journal Article
- ISSN/ISBN: 2045-2322
- DOI: 10.1038/srep34517
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
The interaction between a magnetic domain wall and a pinning site is explored in a planar nanowire using micromagnetics to reveal perturbations of the pinning energetics for propagating domain walls. Numerical simulations in the high damping ’quasi-static’ and low damping ’dynamic’ regimes are compared and show clear differences in de-pinning fields, indicating that dynamical micromagnetic models, which incorporate precessionally limited magnetization processes, are needed to understand domain wall pinning. Differences in the micromagnetic domain wall structure strongly influence the pinning and show periodic behaviour with increasing applied field associated with Walker breakdown. In the propagating regime pinning is complicated.