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

doi:10.1016/j.jmmm.2009.07.041

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

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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 language	English
Pages (from-to)	1425-1427
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	322
Issue number	9-12
DOIs	https://doi.org/10.1016/j.jmmm.2009.07.041
Publication status	Published - 2010 May

Keywords

Ferromagnetic resonance
Spin pumping
Spin torque

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2009.07.041

Cite this

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title = "Modulation of gyromagnetic ratio in Ni81 Fe19 thin film due to spin pumping",

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.",

keywords = "Ferromagnetic resonance, Spin pumping, Spin torque",

author = "K. Sasage and K. Harii and K. Ando and K. Uchida and D. Kikuchi and E. Saitoh",

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AU - Sasage, K.

AU - Harii, K.

AU - Ando, K.

AU - Uchida, K.

AU - Kikuchi, D.

AU - Saitoh, E.

PY - 2010/5

Y1 - 2010/5

N2 - 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.

AB - 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.

KW - Ferromagnetic resonance

KW - Spin pumping

KW - Spin torque

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