Influence of asymmetry of Kerr signal on vortex configuration in submicro-scaled permalloy disc array

Chao Hsien Huang, Kuo Ming Wu, Jong Ching Wu, Lance Horng

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A self-alignment method for local coating fabrication in submicro-scaled discs is described. The adjustable area of the capping layer on the magnetic disc can create asymmetric Kerr signals for vortex configuration and provide different asymmetries of the Kerr signal. Nondegenerate Kerr signals of vortex chirality in 300 nm diameter and 40 nm thick Ni80Fe20 discs locally capped with 25 nm thickness Al were investigated. Various capping area ratios ranging from 0 to 0.5 were fabricated to observe the influence of Kerr signal asymmetry. This modifiable asymmetric Kerr signal advances the time-resolved measurements of vortex chirality dynamics.

Original languageEnglish
Article number245001
JournalJournal of Physics D: Applied Physics
Volume46
Issue number24
DOIs
Publication statusPublished - 2013 Jun 19

Fingerprint

Permalloys (trademark)
Vortex flow
Chirality
asymmetry
vortices
configurations
chirality
Time measurement
self alignment
magnetic disks
Fabrication
Coatings
time measurement
coatings
fabrication

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

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abstract = "A self-alignment method for local coating fabrication in submicro-scaled discs is described. The adjustable area of the capping layer on the magnetic disc can create asymmetric Kerr signals for vortex configuration and provide different asymmetries of the Kerr signal. Nondegenerate Kerr signals of vortex chirality in 300 nm diameter and 40 nm thick Ni80Fe20 discs locally capped with 25 nm thickness Al were investigated. Various capping area ratios ranging from 0 to 0.5 were fabricated to observe the influence of Kerr signal asymmetry. This modifiable asymmetric Kerr signal advances the time-resolved measurements of vortex chirality dynamics.",
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Influence of asymmetry of Kerr signal on vortex configuration in submicro-scaled permalloy disc array. / Huang, Chao Hsien; Wu, Kuo Ming; Wu, Jong Ching; Horng, Lance.

In: Journal of Physics D: Applied Physics, Vol. 46, No. 24, 245001, 19.06.2013.

Research output: Contribution to journalArticle

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AU - Wu, Kuo Ming

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AU - Horng, Lance

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