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 journalArticlepeer-review

5 Citations (Scopus)


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
Issue number6
Publication statusPublished - 2012 Nov 1

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

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