Bias Magnetic Field Dependence of RF Permeability in Thin Permalloy Films

H. Iwasaki, J. Akiyama, S. Yatabe, S. Chiba

Research output: Contribution to journalArticle


Dependence of RF permeability (μRF = μ ′ RF − j μ″RF) on a bias magnetic field (H: corresponding to a signal field) in a permalloy film, when H and RF exciting magnetic fields (HRF) are in the direction of the hard axis in Permalloy films, was analyzed with the film taken as a single domain, the demagnetizing field in the film plane taken as 0, HRF assumed to be sufficiently small compared with the anisotropic field Hk, and H assumed to be static. It was found that the μ’RF change is sharp at ω < ωk (ωβ: ferromagnetic resonance frequency at H = 0) and the μ” RF change is sharp at ω ≃ ωk.

Original languageEnglish
Pages (from-to)663-664
Number of pages2
JournalIEEE Translation Journal on Magnetics in Japan
Issue number7
Publication statusPublished - 1987 Jul


ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Engineering(all)

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