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Ferromagnetic resonance in multilayer [Fe/Cr]n structures with noncollinear magnetic ordering

  • A. B. Drovosekov
  • N. M. Kreines
  • D. I. Kholin
  • V. F. Meshcheryakov
  • M. A. Milyaev
  • L. N. Romashev
  • V. V. Ustinov
Condensed Matter

Abstract

The excitation spectrum in an [Fe/Cr]n multilayer structure with non-collinear magnetic ordering was studied by the ferromagnetic resonance (FMR) method in the frequency interval 9.5–37 GHz at room temperature. Besides an acoustic branch, several additional modes were observed under parallel excitation of resonance. The FMR spectrum was calculated analytically in a biquadratic exchange model, neglecting in-plane anisotropy, for an infinite number of layers in the structure and numerically for a finite number of layers contained in real samples. It was shown that the observed modes correspond to excitation of standing spin waves with wave vectors perpendicular to the film plane.

PACS numbers

76.50.+g 75.70.Cn 75.60.Ej 

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Copyright information

© MAIK "Nauka/Interperiodica" 1998

Authors and Affiliations

  • A. B. Drovosekov
    • 1
  • N. M. Kreines
    • 1
  • D. I. Kholin
    • 1
  • V. F. Meshcheryakov
    • 2
  • M. A. Milyaev
    • 3
  • L. N. Romashev
    • 3
  • V. V. Ustinov
    • 3
  1. 1.P. L. Kapitsa Institute of Physical ProblemsRussian Academy of SciencesMoscowRussia
  2. 2.Moscow Institute of Radio Engineering, Electronics, and AutomaticsMoscowRussia
  3. 3.Institute of Metal PhysicsUrals Branch of the Russian Academy of SciencesEkaterinburgRussia

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