Micromagnetic modeling on current-induced multiple domain-wall motion in permalloy nanotubes

Research output: Contribution to journalArticle

Abstract

We performed micromagnetic modeling on moving multiple data bits (2-64 bits) in permalloy (Ni80Fe20) cylindrical nanotubes (PCNTs) and numerically investigated the domain-wall movement, which relies on the applied current, the Gilbert damping factor α and radii ratio β. It was found that current-driven multiple transverse domain walls (TDWs) motion in nanotubes with an outer diameter below 25 nm and β > 0.33) was characteristic of an exceptional massless mobility. We observed that the velocity of TDWs confined in nanotubes, which was in proportion to the applied current, depended mainly on the sizes of the tubes, and α but was independent of the number of TDWs. The obtained results offer a way to design the magnetization structures for the DW-based devices by controlling the nanotube geometric and material parameters.

Original languageEnglish
Article number6971646
JournalIEEE Transactions on Magnetics
Volume50
Issue number11
DOIs
Publication statusPublished - 2014 Nov 1

Fingerprint

Domain walls
Induced currents
Nanotubes
Magnetization
Damping

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

@article{58262ac499e14df4979a53e5bf7e0b21,
title = "Micromagnetic modeling on current-induced multiple domain-wall motion in permalloy nanotubes",
abstract = "We performed micromagnetic modeling on moving multiple data bits (2-64 bits) in permalloy (Ni80Fe20) cylindrical nanotubes (PCNTs) and numerically investigated the domain-wall movement, which relies on the applied current, the Gilbert damping factor α and radii ratio β. It was found that current-driven multiple transverse domain walls (TDWs) motion in nanotubes with an outer diameter below 25 nm and β > 0.33) was characteristic of an exceptional massless mobility. We observed that the velocity of TDWs confined in nanotubes, which was in proportion to the applied current, depended mainly on the sizes of the tubes, and α but was independent of the number of TDWs. The obtained results offer a way to design the magnetization structures for the DW-based devices by controlling the nanotube geometric and material parameters.",
author = "Wu, {Feng Sheng} and Lance Horng and Kao, {Yee Mou} and Wu, {Jong Ching}",
year = "2014",
month = "11",
day = "1",
doi = "10.1109/TMAG.2014.2325022",
language = "English",
volume = "50",
journal = "IEEE Transactions on Magnetics",
issn = "0018-9464",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "11",

}

Micromagnetic modeling on current-induced multiple domain-wall motion in permalloy nanotubes. / Wu, Feng Sheng; Horng, Lance; Kao, Yee Mou; Wu, Jong Ching.

In: IEEE Transactions on Magnetics, Vol. 50, No. 11, 6971646, 01.11.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Micromagnetic modeling on current-induced multiple domain-wall motion in permalloy nanotubes

AU - Wu, Feng Sheng

AU - Horng, Lance

AU - Kao, Yee Mou

AU - Wu, Jong Ching

PY - 2014/11/1

Y1 - 2014/11/1

N2 - We performed micromagnetic modeling on moving multiple data bits (2-64 bits) in permalloy (Ni80Fe20) cylindrical nanotubes (PCNTs) and numerically investigated the domain-wall movement, which relies on the applied current, the Gilbert damping factor α and radii ratio β. It was found that current-driven multiple transverse domain walls (TDWs) motion in nanotubes with an outer diameter below 25 nm and β > 0.33) was characteristic of an exceptional massless mobility. We observed that the velocity of TDWs confined in nanotubes, which was in proportion to the applied current, depended mainly on the sizes of the tubes, and α but was independent of the number of TDWs. The obtained results offer a way to design the magnetization structures for the DW-based devices by controlling the nanotube geometric and material parameters.

AB - We performed micromagnetic modeling on moving multiple data bits (2-64 bits) in permalloy (Ni80Fe20) cylindrical nanotubes (PCNTs) and numerically investigated the domain-wall movement, which relies on the applied current, the Gilbert damping factor α and radii ratio β. It was found that current-driven multiple transverse domain walls (TDWs) motion in nanotubes with an outer diameter below 25 nm and β > 0.33) was characteristic of an exceptional massless mobility. We observed that the velocity of TDWs confined in nanotubes, which was in proportion to the applied current, depended mainly on the sizes of the tubes, and α but was independent of the number of TDWs. The obtained results offer a way to design the magnetization structures for the DW-based devices by controlling the nanotube geometric and material parameters.

UR - http://www.scopus.com/inward/record.url?scp=84915745502&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84915745502&partnerID=8YFLogxK

U2 - 10.1109/TMAG.2014.2325022

DO - 10.1109/TMAG.2014.2325022

M3 - Article

AN - SCOPUS:84915745502

VL - 50

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 11

M1 - 6971646

ER -