Fabrication and magnetic properties of 100-nm-scaled permalloy nanotube arrays

Yu Chen Huang, Cheng Yi Kuo, Jia Hong Shyu, Ching Ming Lee, Lance Horng, Jong-Ching Wu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fabrication and magnetization characteristics of permalloy nanotube arrays that are in 100-nm-scale have been demonstrated. Permalloy nanotube array is made by using a standard electron-beam lithography combining with an ion-beam milling process. Geometric parameters of individual permalloy nanotube are fixed to be 300/20 nm for outer diameter/wall thickness, and the heights are varied from 180 to 600 nm. Height dependent magnetization reversal behaviors are investigated by using longitudinal magneto-optical Kerr effect with the external field applied perpendicular to the tubular axis. Micromagnetic simulations are performed to scrutinize the micromagnetization configurations. Up to two pairs of head-to-head and tail-to-tail domain walls on both tubular ends and vortex structure motion on the sidewall are identified during the magnetization reversal.

Original languageEnglish
Article number06FF07
JournalJournal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
Volume30
Issue number6
DOIs
Publication statusPublished - 2012 Nov 1

Fingerprint

Permalloys (trademark)
Nanotubes
Magnetization reversal
nanotubes
Magnetic properties
magnetic properties
Fabrication
magnetization
fabrication
Optical Kerr effect
Electron beam lithography
Domain walls
Kerr effects
Ion beams
domain wall
Magnetization
Vortex flow
lithography
ion beams
electron beams

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

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abstract = "Fabrication and magnetization characteristics of permalloy nanotube arrays that are in 100-nm-scale have been demonstrated. Permalloy nanotube array is made by using a standard electron-beam lithography combining with an ion-beam milling process. Geometric parameters of individual permalloy nanotube are fixed to be 300/20 nm for outer diameter/wall thickness, and the heights are varied from 180 to 600 nm. Height dependent magnetization reversal behaviors are investigated by using longitudinal magneto-optical Kerr effect with the external field applied perpendicular to the tubular axis. Micromagnetic simulations are performed to scrutinize the micromagnetization configurations. Up to two pairs of head-to-head and tail-to-tail domain walls on both tubular ends and vortex structure motion on the sidewall are identified during the magnetization reversal.",
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Fabrication and magnetic properties of 100-nm-scaled permalloy nanotube arrays. / Huang, Yu Chen; Kuo, Cheng Yi; Shyu, Jia Hong; Lee, Ching Ming; Horng, Lance; Wu, Jong-Ching.

In: Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics, Vol. 30, No. 6, 06FF07, 01.11.2012.

Research output: Contribution to journalArticle

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AU - Wu, Jong-Ching

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