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Role of anisotropy on the domain wall properties of ferromagnetic nanotubes

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
0304-8853
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
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), 2024-2029. (doi:10.1016/j.jmmm.2012.01.040).

Record type: Article

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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More information

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
ORCID for D. Cortés-Ortuño: ORCID iD orcid.org/0000-0003-3799-3141

Catalogue record

Date deposited: 09 Apr 2019 16:30
Last modified: 09 Nov 2021 15:02

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Contributors

Author: J.A. López-López
Author: D. Cortés-Ortuño ORCID iD
Author: P. Landeros

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