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Singularity in high-frequency susceptibility of thin magnetic films with uniaxial anisotropy

  • B. A. Belyaev
  • A. V. Izotov
  • S. Ya. Kiparisov
Condensed Matter

Abstract

A sharp peak of magnetic susceptibility has been observed in the ferromagnetic resonance spectra of uniaxial magnetic films placed in a planar field directed orthogonal to the easy magnetization axis, along which a pumping high-frequency magnetic field has been oriented. The peak width is considerably narrower than the line width of the uniform ferromagnetic resonance, and its position in a field equal to the film anisotropy field does not depend on the pumping frequency. The nature of the peak is associated with a drastic increase in the static transverse susceptibility of the film in the vicinity of the anisotropy field. It is shown phenomenologically that the peak can be observed only for quality samples with small angular and amplitude dispersion of the uniaxial anisotropy.

PACS numbers

75.70.Ak 76.50.+g 75.30.Cr 

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Copyright information

© MAIK "Nauka/Interperiodica" 2001

Authors and Affiliations

  • B. A. Belyaev
    • 1
  • A. V. Izotov
    • 1
  • S. Ya. Kiparisov
    • 2
  1. 1.Kirenskii Institute of Physics, Siberian DivisionRussian Academy of SciencesAkademgorodok, KrasnoyarskRussia
  2. 2.Kristall NIITs, Krasnoyarsk State UniversityKrasnoyarskRussia

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