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Creep turns linear in narrow ferromagnetic nanostrips

Jonathan Leliaert UGent, Ben Van de Wiele, Arne Vansteenkiste, Lasse Laurson, Gianfranco Durin, Luc Dupré UGent and Bartel Van Waeyenberge UGent (2016) SCIENTIFIC REPORTS. 6.
abstract
The motion of domain walls in magnetic materials is a typical example of a creep process, usually characterised by a stretched exponential velocity-force relation. By performing large-scale micromagnetic simulations, and analyzing an extended 1D model which takes the effects of finite temperatures and material defects into account, we show that this creep scaling law breaks down in sufficiently narrow ferromagnetic strips. Our analysis of current-driven transverse domain wall motion in disordered Permalloy nanostrips reveals instead a creep regime with a linear dependence of the domain wall velocity on the applied field or current density. This originates from the essentially point-like nature of domain walls moving in narrow, line- like disordered nanostrips. An analogous linear relation is found also by analyzing existing experimental data on field-driven domain wall motion in perpendicularly magnetised media.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
MOTION, PERPENDICULAR ANISOTROPY, MEMORY, UNIVERSALITY, FLUCTUATIONS, TEMPERATURE, RACETRACK, NANOWIRES, STRIPS, DOMAIN-WALL DYNAMICS
journal title
SCIENTIFIC REPORTS
Sci. Rep.
volume
6
article number
20472
pages
9 pages
Web of Science type
Article
Web of Science id
000369282400001
JCR category
MULTIDISCIPLINARY SCIENCES
JCR impact factor
4.259 (2016)
JCR rank
10/64 (2016)
JCR quartile
1 (2016)
ISSN
2045-2322
DOI
10.1038/srep20472
language
English
UGent publication?
yes
classification
A1
copyright statement
I have retained and own the full copyright for this publication
id
7040024
handle
http://hdl.handle.net/1854/LU-7040024
date created
2016-01-16 14:56:29
date last changed
2018-02-01 12:08:23
@article{7040024,
  abstract     = {The motion of domain walls in magnetic materials is a typical example of a creep process, usually characterised by a stretched exponential velocity-force relation. By performing large-scale micromagnetic simulations, and analyzing an extended 1D model which takes the effects of finite temperatures and material defects into account, we show that this creep scaling law breaks down in sufficiently narrow ferromagnetic strips. Our analysis of current-driven transverse domain wall motion in disordered Permalloy nanostrips reveals instead a creep regime with a linear dependence of the domain wall velocity on the applied field or current density. This originates from the essentially point-like nature of domain walls moving in narrow, line- like disordered nanostrips. An analogous linear relation is found also by analyzing existing experimental data on field-driven domain wall motion in perpendicularly magnetised media.},
  articleno    = {20472},
  author       = {Leliaert, Jonathan and Van de Wiele, Ben and Vansteenkiste, Arne and Laurson, Lasse and Durin, Gianfranco and Dupr{\'e}, Luc and Van Waeyenberge, Bartel},
  issn         = {2045-2322},
  journal      = {SCIENTIFIC REPORTS},
  keyword      = {MOTION,PERPENDICULAR ANISOTROPY,MEMORY,UNIVERSALITY,FLUCTUATIONS,TEMPERATURE,RACETRACK,NANOWIRES,STRIPS,DOMAIN-WALL DYNAMICS},
  language     = {eng},
  pages        = {9},
  title        = {Creep turns linear in narrow ferromagnetic nanostrips},
  url          = {http://dx.doi.org/10.1038/srep20472},
  volume       = {6},
  year         = {2016},
}

Chicago
Leliaert, Jonathan, Ben Van de Wiele, Arne Vansteenkiste, Lasse Laurson, Gianfranco Durin, Luc Dupré, and Bartel Van Waeyenberge. 2016. “Creep Turns Linear in Narrow Ferromagnetic Nanostrips.” Scientific Reports 6.
APA
Leliaert, J., Van de Wiele, B., Vansteenkiste, A., Laurson, L., Durin, G., Dupré, L., & Van Waeyenberge, B. (2016). Creep turns linear in narrow ferromagnetic nanostrips. SCIENTIFIC REPORTS, 6.
Vancouver
1.
Leliaert J, Van de Wiele B, Vansteenkiste A, Laurson L, Durin G, Dupré L, et al. Creep turns linear in narrow ferromagnetic nanostrips. SCIENTIFIC REPORTS. 2016;6.
MLA
Leliaert, Jonathan, Ben Van de Wiele, Arne Vansteenkiste, et al. “Creep Turns Linear in Narrow Ferromagnetic Nanostrips.” SCIENTIFIC REPORTS 6 (2016): n. pag. Print.