Interaction of antiparallel transverse domain walls in ferromagnetic nanowires

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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The interaction of antiparallel transverse domain walls in ferromagnetic nanowires was investigated via micromagnetic simulation with systematic variations of the external field strength as well as the wire thickness. The interaction of antiparallel transverse walls after domain wall collision exhibited damped multiple collisions due to the rigid structure of the antiparallel transverse walls. The detailed process during the multiple collisions was analyzed via the Fast Fourier Transform technique, along with a careful examination of the inner spin structures of the colliding domain walls. It was found that a frequency peak of multiple collisions shifted to a higher peak position as the external field strength increases. With a stronger field strength of around a few hundred mT, it was found that two antiparallel transverse walls were finally annihilated with formation of complex antivortex structures.

Original languageEnglish
Pages (from-to)6237-6240
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number7
DOIs
Publication statusPublished - 1 Jul 2011

Keywords

  • Antiparallel Transverse Wall
  • Domain Wall Collision
  • Ferromagnetic Nanowires
  • Walker Breakdown

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