Influence of different onion states on magnetization reversal processes in permalloy rings

Mei Feng Lai, Ying Jiun Chen, Da Ren Liu, Chi Kuen Lo, Chia Jung Hsu, Chun Neng Liao, Chiun Peng Lee, Yi Hsun Chiu, Zung Hang Wei

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Simulation and experiment are performed to investigate the influence of onion states with different-helicity pair vortices on the magnetization reversal process. It is found that for the onion state that has pair vortices with the same helicity, flux-closure state occurs in the reversal process; for the onion state that has pair vortices with opposite helicity, flux-closure state does not occur in the reversal process, and the onion state transforms directly to the reverse onion state. In addition, notches at the same side and diagonal notches with respect to the field direction are designed on the permalloy rings to induce onion states with same-helicity pair vortices and opposite-helicity pair vortices, respectively, for the control of the three-step and two-step magnetization reversal processes.

Original languageEnglish
Article number5393236
Pages (from-to)179-182
Number of pages4
JournalIEEE Transactions on Magnetics
Volume46
Issue number2
DOIs
Publication statusPublished - 2010 Feb 1

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Keywords

  • Hysteresis
  • Magnetic thin films
  • Magnetization reversal
  • Permalloy

ASJC Scopus subject areas

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

Cite this

Lai, M. F., Chen, Y. J., Liu, D. R., Lo, C. K., Hsu, C. J., Liao, C. N., Lee, C. P., Chiu, Y. H., & Wei, Z. H. (2010). Influence of different onion states on magnetization reversal processes in permalloy rings. IEEE Transactions on Magnetics, 46(2), 179-182. [5393236]. https://doi.org/10.1109/TMAG.2009.2034388