Role of anisotropy on the domain wall properties of ferromagnetic nanotubes
Role of anisotropy on the domain wall properties of ferromagnetic nanotubes
In this paper we investigate the role of magneto-crystalline anisotropy on the domain wall (DW) properties of tubular magnetic nanostructures. Based on a theoretical model and micromagnetic simulations, we show that either cubic or uniaxial magneto-crystalline anisotropies have some influence on the domain wall properties (wall size, propagation velocity and energy barrier) and then on the overall magnetization reversal mechanism. Besides the characterization of the transverse and vortex domain wall sizes for different anisotropies, we predict an anisotropy dependent transition between the occurrence of transverse and vortex domain walls in tubular nanowires. We also discuss the dynamics of the vortex DW propagation gradually increasing the uniaxial anisotropy constant and we found that the average velocity is considerably reduced. Our results show that different anisotropies can be considered in real samples in order to manipulate the domain wall behavior and the magnetization reversal process.
Domain wall, Magnetic anisotropy, Magnetic nanotube, Magnetic switching, Transverse wall, Vortex wall
2024-2029
López-López, J.A.
efd28bb8-5bb4-4be8-9567-5fc6c3fe4c75
Cortés-Ortuño, D.
97d026d6-1083-4edf-8ba6-2f66a3e15033
Landeros, P.
ade05e37-18cf-4752-b729-0d32f9244ca1
July 2012
López-López, J.A.
efd28bb8-5bb4-4be8-9567-5fc6c3fe4c75
Cortés-Ortuño, D.
97d026d6-1083-4edf-8ba6-2f66a3e15033
Landeros, P.
ade05e37-18cf-4752-b729-0d32f9244ca1
López-López, J.A., Cortés-Ortuño, D. and Landeros, P.
(2012)
Role of anisotropy on the domain wall properties of ferromagnetic nanotubes.
Journal of Magnetism and Magnetic Materials, 324 (13), .
(doi:10.1016/j.jmmm.2012.01.040).
Abstract
In this paper we investigate the role of magneto-crystalline anisotropy on the domain wall (DW) properties of tubular magnetic nanostructures. Based on a theoretical model and micromagnetic simulations, we show that either cubic or uniaxial magneto-crystalline anisotropies have some influence on the domain wall properties (wall size, propagation velocity and energy barrier) and then on the overall magnetization reversal mechanism. Besides the characterization of the transverse and vortex domain wall sizes for different anisotropies, we predict an anisotropy dependent transition between the occurrence of transverse and vortex domain walls in tubular nanowires. We also discuss the dynamics of the vortex DW propagation gradually increasing the uniaxial anisotropy constant and we found that the average velocity is considerably reduced. Our results show that different anisotropies can be considered in real samples in order to manipulate the domain wall behavior and the magnetization reversal process.
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Published date: July 2012
Keywords:
Domain wall, Magnetic anisotropy, Magnetic nanotube, Magnetic switching, Transverse wall, Vortex wall
Identifiers
Local EPrints ID: 430005
URI: http://eprints.soton.ac.uk/id/eprint/430005
ISSN: 0304-8853
PURE UUID: c83f3e89-7fc8-4a24-a31d-d0379f7420d1
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Date deposited: 09 Apr 2019 16:30
Last modified: 17 Mar 2024 12:19
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Contributors
Author:
J.A. López-López
Author:
D. Cortés-Ortuño
Author:
P. Landeros
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