Magnetic relaxation of normal-metal (NM)/80NiFe/NM films

S. Mizukami, Y. Ando, T. Miyazaki

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

Ferromagnetic resonance was measured for Cu/80NiFe(Py)/Cu/Pt films with various thicknesses of Cu spacer (dCu) in order to clarify the mechanism of the enhancement of Gilbert damping parameter (G) for Pt/Py/Pt films reported previously. The peak-to-peak linewidth (ΔHPP) for the Cu/Py/Cu/Pt film was very large at dCu = 0 Å and decreased gradually with increasing dCu. The out-of-plane angular dependence of ΔHPP for Cu/Py/Cu/Pt films was measured and analyzed using Landau-Lifshitz-Gilbert equation, by taking into account the magnetic inhomogeneities. The value of G obtained from analysis of the Cu/Py/Cu/Pt film was about twice larger than that for Cu/Py/Cu film even at dCu = 100 Å and decreased gradually as dCu increased.

Original languageEnglish
Pages (from-to)42-44
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume239
Issue number1-3
DOIs
Publication statusPublished - 2002 Feb

Keywords

  • Ferromagnetic resonance
  • Gilbert damping parameter
  • Linewidth
  • Permalloy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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