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Effective pinning energy landscape perturbations for propagating magnetic domain walls.

Burn, D.M. and Atkinson, D. (2016) 'Effective pinning energy landscape perturbations for propagating magnetic domain walls.', Scientific reports., 6 . p. 34517.

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.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1038/srep34517
Publisher 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/
Date accepted:13 September 2016
Date deposited:12 October 2016
Date of first online publication:03 October 2016
Date first made open access:No date available

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