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Effective pinning energy landscape perturbations for propagating magnetic domain walls

Burn, D.M.; Atkinson, D.

Effective pinning energy landscape perturbations for propagating magnetic domain walls Thumbnail


Authors

D.M. Burn



Abstract

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.

Citation

Burn, D., & Atkinson, D. (2016). Effective pinning energy landscape perturbations for propagating magnetic domain walls. Scientific Reports, 6, Article 34517. https://doi.org/10.1038/srep34517

Journal Article Type Article
Acceptance Date Sep 13, 2016
Online Publication Date Oct 3, 2016
Publication Date Oct 3, 2016
Deposit Date Sep 14, 2016
Publicly Available Date Oct 12, 2016
Journal Scientific Reports
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 6
Article Number 34517
DOI https://doi.org/10.1038/srep34517

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Published Journal Article (522 Kb)
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/






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