Temperature dependences of spin-diffusion lengths of Cu and Ru layers

Satoshi Yakata, Yasuo Ando, Terunobu Miyazaki, Shigemi Mizukami

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Ferromagnetic resonance (FMR) was measured in Cu/Ni80Fe 20/normal-metal: NM (d)/Pt, Cu/Ni80Fe20/NM (d) films with various d values to clarify the temperature dependence of spin-diffusion length induced by the precession of magnetization on Gilbert damping. The films were fabricated by rf magnetron sputtering. The out-of-plane angular dependences of FMR resonance field and linewidth were analyzed using a Landau-Lifshitz-Gilbert equation, and the Gilbert damping parameter G of NiFe was obtained. The obtained spin-diffusion lengths λSD were 350 and 950 nm at 300 and 4.5 K, respectively. The spinflip probability of the Cu layer was obtained using the temperature dependence of FMR linewidth. These results were then compared with the calculated data of the temperature dependence of spin-diffusion length.

Original languageEnglish
Pages (from-to)3892-3895
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number5 A
DOIs
Publication statusPublished - 2006 May 9

Keywords

  • FMR linewidth
  • Gilbert damping
  • Spin-diffusion length
  • Spin-flip probability
  • Spin-pump effect

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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