Observations of single magnetic domain wall in nanomagnet by magnetic force microscopy

Takehiro Yamaoka, Kazutoshi Watanabe, Yoshiharu Shirakawabe, Kazuo Chinone, Eiji Saitoh, Hideki Miyajima

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Magnetic force microscopy (MFM) with a low moment probe and Q-control in a vacuum was applied to a permalloy semicircular wire loop with a single magnetic domain wall (DW). We successfully observed a nearly free single DW in such a nanomagnet, which is easy to move even using weak magnetic fields. In the case of MFM measurement with a high moment probe, the effects of the probe's stray field caused "DW manipulation," and the MFM signal was maximized just above the wire. When using the low moment probe, the MFM signal was maximized at the side of the wire, which concurs with the result of micromagnetic simulation.

Original languageEnglish
Pages (from-to)2230-2233
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number3 B
DOIs
Publication statusPublished - 2006 Mar 27

Keywords

  • DW manipulation
  • High moment probe
  • Low moment probe
  • Magnetic force microscopy
  • Micromagnetic simulation
  • Q factor
  • Single magnetic domain wall (DW)

ASJC Scopus subject areas

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

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