Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires

Domain wall propagation in modulated-diameter cylindrical nanowires is a key phenomenon to be studied with a view to designing three-dimensional magnetic memory devices. This paper presents a theoretical study of transverse domain wall behavior under the influence of a magnetic field within a cylind...

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Autores principales: Fernandez-Roldan, J. A., De Riz, A., Trapp, B., Thirion, C., Vazquez, M., Toussaint, J.-C., Fruchart, O., Gusakova, D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435639/
https://www.ncbi.nlm.nih.gov/pubmed/30914661
http://dx.doi.org/10.1038/s41598-019-40794-1
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author Fernandez-Roldan, J. A.
De Riz, A.
Trapp, B.
Thirion, C.
Vazquez, M.
Toussaint, J.-C.
Fruchart, O.
Gusakova, D.
author_facet Fernandez-Roldan, J. A.
De Riz, A.
Trapp, B.
Thirion, C.
Vazquez, M.
Toussaint, J.-C.
Fruchart, O.
Gusakova, D.
author_sort Fernandez-Roldan, J. A.
collection PubMed
description Domain wall propagation in modulated-diameter cylindrical nanowires is a key phenomenon to be studied with a view to designing three-dimensional magnetic memory devices. This paper presents a theoretical study of transverse domain wall behavior under the influence of a magnetic field within a cylindrical nanowire with diameter modulations. In particular, domain wall pinning close to the diameter modulation was quantified, both numerically, using finite element micromagnetic simulations, and analytically. Qualitative analytical model for gently sloping modulations resulted in a simple scaling law which may be useful to guide nanowire design when analyzing experiments. It shows that the domain wall depinning field value is proportional to the modulation slope.
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spelling pubmed-64356392019-04-02 Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires Fernandez-Roldan, J. A. De Riz, A. Trapp, B. Thirion, C. Vazquez, M. Toussaint, J.-C. Fruchart, O. Gusakova, D. Sci Rep Article Domain wall propagation in modulated-diameter cylindrical nanowires is a key phenomenon to be studied with a view to designing three-dimensional magnetic memory devices. This paper presents a theoretical study of transverse domain wall behavior under the influence of a magnetic field within a cylindrical nanowire with diameter modulations. In particular, domain wall pinning close to the diameter modulation was quantified, both numerically, using finite element micromagnetic simulations, and analytically. Qualitative analytical model for gently sloping modulations resulted in a simple scaling law which may be useful to guide nanowire design when analyzing experiments. It shows that the domain wall depinning field value is proportional to the modulation slope. Nature Publishing Group UK 2019-03-26 /pmc/articles/PMC6435639/ /pubmed/30914661 http://dx.doi.org/10.1038/s41598-019-40794-1 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Fernandez-Roldan, J. A.
De Riz, A.
Trapp, B.
Thirion, C.
Vazquez, M.
Toussaint, J.-C.
Fruchart, O.
Gusakova, D.
Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
title Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
title_full Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
title_fullStr Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
title_full_unstemmed Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
title_short Modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
title_sort modeling magnetic-field-induced domain wall propagation in modulated-diameter cylindrical nanowires
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435639/
https://www.ncbi.nlm.nih.gov/pubmed/30914661
http://dx.doi.org/10.1038/s41598-019-40794-1
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