Simulation studies of domain wall width changes in various nanoconstriction shapes

Se Dong Kim, Bvong Sun Chun, Deok Kee Kim, Young Keun Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In magnetic nanoconstriction systems, the magnetic calculations on the domain wall width (DWW) were carried out using the micromagnetics simulation based on Landau-Lifschitz-Gilbert equation. The results for the normal constriction type and the newly designed round constriction type were compared. DWW changes in various nanoconstriction sizes and shapes were studied while domain walls were constricted at the nanoconstriction. Calculations showed that the domain wall (DW) configurations in the normal constriction type were unstable depending on the initial state, whereas the domain wall configurations were stable in the round constriction type independent of the initial state. The stable DW configuration in the round constriction type seems to be due to the same spatial gradient across the structure.

Original languageEnglish
Pages (from-to)2621-2623
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 2006 Oct

Bibliographical note

Funding Information:
This work was supported by Grant M10500000105-05J0000-10510 from the National Research Laboratory Program of the Korea Science and Engineering Foundation and by Grant M60501000045-05A0100-04510 from the Korea Science and Engineering Foundation.


  • Domain wall width (DWW)
  • magnetic nanoconstriction
  • micromagnetic simulation
  • round constriction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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