Numerical investigation of stripe structures in ferromagnetic thin films with perpenedicular anisotropy

Bharat B. Pant, Kimihide Matsuyama

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Stripe structures in ferromagnetic thin films with perpendicular anisotropy and quality factor Q < 1 are numerically investigated using energy minimization. This formulation is applied to films with NiFe-type material parameters, high anisotropy (O(100) Oe) and thickness in the range of 1000 2500. For a given thickness, these films undergo a transition from a uniform in-plane state to a stripe state characterized by periodic out-of-plane tilt of magnetization as the anisotropy is increased above a critical value. The critical anisotropy decreases with increasing thickness; this critical relationship is calculated and is found to agree well with previous analytic results. The ratio of the stripe-state wavelength to film thickness is 2 on the critical locus but decreases as either the anisotropy or the film thickness is increased. The stray field outside the film surface has an amplitude O(10) Oe and submicron period.

Original languageEnglish
Pages (from-to)3817-3822
Number of pages6
JournalJapanese Journal of Applied Physics
Volume32
Issue number9 R
DOIs
Publication statusPublished - Jan 1 1993

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Anisotropy
Thin films
anisotropy
Film thickness
thin films
film thickness
loci
Q factors
Magnetization
formulations
Wavelength
magnetization
optimization
wavelengths
energy

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Numerical investigation of stripe structures in ferromagnetic thin films with perpenedicular anisotropy. / Pant, Bharat B.; Matsuyama, Kimihide.

In: Japanese Journal of Applied Physics, Vol. 32, No. 9 R, 01.01.1993, p. 3817-3822.

Research output: Contribution to journalArticle

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