Modeling on current-induced multiple domain-wall motion in permalloy nanowires

Feng Sheng Wu, Lance Horng, Yee Mou Kao, Hao Hsuan Chen, Jong Ching Wu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We performed micromagnetic modeling on moving multiple data bits (4 to 64 bits) in permalloy nanowires and investigated the important factors affecting domain-wall movement. It was observed that current-driven multiple transverse domain walls motion (MTDWM) in cylindrical nanowires with a diameter below 20nm is characteristic of an exceptional massless mobility, which is independent of the number of bits. Besides, two phenomena are noteworthy: First, the linear velocity and the domain-wall width are closely related to the diameter of a wire. Second, the domain walls collapse when the wire diameter is more than 30 nm.

Original languageEnglish
Article number093002
JournalJapanese Journal of Applied Physics
Issue number9
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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