Investigation of ferromagnetic microstructures by local hall effect and magnetic force microscopy

Junsaku Nitta, Thomas Schäpers, Hubert B. Heersche, Takaaki Koga, Yuuki Sato, Hideaki Takayanagi

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


We have investigated the magnetization process of NiFe micro-magnets, using fringing field induced local Hall effect (LHE) and magnetic force microscopy (MFM). Although the LHE reflects information only from the edge of micro-magnets, the MFM observation supports the conclusion that a rapid jump in the Hall resistance implies a sharp switching of the magnetization. The width dependence of coercive field Hc for NiFe micro-magnets obtained from LHE measurement is well reproduced by numerical calculations. The good agreement between the LHE experiment and the model calculation shows that a LHE device provides useful information on the magnetization process in micro-magnets.

Original languageEnglish
Pages (from-to)2497-2500
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number4 B
Publication statusPublished - 2002 Apr
Externally publishedYes


  • Local hall effect
  • Magnetic force microscopy
  • Magnetization process
  • Micro-magnets
  • Two dimensional electron gas

ASJC Scopus subject areas

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


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