Modulation of gyromagnetic ratio in Ni81 Fe19 thin film due to spin pumping

K. Sasage, K. Harii, K. Ando, K. Uchida, D. Kikuchi, E. Saitoh

Research output: Contribution to journalArticlepeer-review

Abstract

The ferromagnetic resonance (FMR) spectra in a NiFe film covered partly with Pt have been investigated. In contrast to the simple Lorentzian spectral shape observed for a plain Ni81 Fe19 film, the FMR spectral shape for the Ni81 Fe19 / Pt film clearly deviates from the Lorentzian shape. This result can be argued in terms of the renormalization of the gyromagnetic ratio affected by the spin pumping effect in the vicinity of the Ni81 Fe19 / Pt interface.

Original languageEnglish
Pages (from-to)1425-1427
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume322
Issue number9-12
DOIs
Publication statusPublished - 2010 May 1

Keywords

  • Ferromagnetic resonance
  • Spin pumping
  • Spin torque

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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