Observation of magnetization reversal process in Ni-Fe nanowire using magnetic field sweeping-magnetic force microscopy

Yasushi Endo, Yusuke Matsumura, Hideki Fujimoto, Ryoichi Nakatani, Masahiko Yamamoto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The details of the magnetization reversal process of Ni-Fe nanowires, which were 10, 30, and 50-nm thick, were successfully observed using our newly proposed magnetization measurement method, namely, magnetic field sweeping (MFS)-magnetic force microscopy (MFM). All the points within the nanowire show marked phase changes (stray fields change) as the magnetic field is varied. In particular, each nanowire edge displays a hysteresis loop, while the center shows a sharp jump or a plateau area. These results demonstrate that domain wall motion is dominant in the magnetization reversal process of a 10-nm-thick Ni-Fe nanowire and that domain wall motion along with domain wall pinning play important roles in the magnetization reversal process in both 30- and 50-nm-thick Ni-Fe nanowires.

Original languageEnglish
Pages (from-to)L898-L900
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume46
Issue number36-40
DOIs
Publication statusPublished - 2007 Oct 12
Externally publishedYes

Keywords

  • Domain wall
  • MFM
  • Magnetization reversal process
  • Nanoslzed magnet
  • Ni-Fe nanowire

ASJC Scopus subject areas

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

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