Micromagnetic simulation of damped oscillatory behavior of domain wall propagation in sinusoidal ferromagnetic nanowire

H. G. Piao, J. H. Shim, Dede Djuhana, S. H. Lee, S. H. Jun, C. M. Heo, S. K. Oh, S. C. Yu, D. H. Kim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We have investigated a damped oscillatory behavior of domain wall propagation in wavy nanowires under an external field higher than the Walker breakdown field using micromagnetic simulation. In nanowires having sinusoidal edge distortions with variation of wavelengths, domain wall has been observed to pseudomorphically follow the sinusoidal wires with keeping an intrinsic transformational frequency of inner wall spin structure. Oscillation amplitude of the domain wall position decreases as the wavelength of the wire decreases by an interaction between the periodically distributed spins and the propagating domain wall. Oscillatory behavior of the domain wall position is found to decay in a wire having the wavelength well matching with an intrinsic transformational frequency of the propagating domain wall.

Original languageEnglish
Article number5393125
Pages (from-to)224-227
Number of pages4
JournalIEEE Transactions on Magnetics
Volume46
Issue number2
DOIs
Publication statusPublished - 1 Feb 2010

Keywords

  • Damped oscillation
  • Domain wall
  • Ferromagnetic wire
  • Micromagnetic simulation

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