Time-resolved magnetization precession and reversal dynamics investigated using tunneling current and Kerr effect

Y. Ando; H. Nakamura; S. Mizukami; H. Kubota; T. Miyazaki

doi:10.1016/j.jmmm.2003.12.1245

Time-resolved magnetization precession and reversal dynamics investigated using tunneling current and Kerr effect

Y. Ando, H. Nakamura, S. Mizukami, H. Kubota, T. Miyazaki

ENG - Applied Physics

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

1 Citation (Scopus)

Abstract

Magnetization precession and reversal dynamics in permalloy (Py) layer was studied using ns-time-scale spin-polarized tunneling current probing and ps-time-scale Kerr microscopy. In the time-resolved magneto-optical Kerr effect measurement, the precessional frequency increased with increasing external static field. The signal was fitted well with the calculation using Landau-Lifshitz-Gilbert equation of motion with the damping parameter α of 0.008, which corresponded to the value obtained for the film measured using a ferromagnetic resonance.

Original language	English
Pages (from-to)	293-294
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	I
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1245
Publication status	Published - 2004 May

Keywords

FMR
Gilbert damping
Precession
Reversal
Tunnel junction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Time-resolved magnetization precession and reversal dynamics investigated using tunneling current and Kerr effect",

abstract = "Magnetization precession and reversal dynamics in permalloy (Py) layer was studied using ns-time-scale spin-polarized tunneling current probing and ps-time-scale Kerr microscopy. In the time-resolved magneto-optical Kerr effect measurement, the precessional frequency increased with increasing external static field. The signal was fitted well with the calculation using Landau-Lifshitz-Gilbert equation of motion with the damping parameter α of 0.008, which corresponded to the value obtained for the film measured using a ferromagnetic resonance.",

keywords = "FMR, Gilbert damping, Precession, Reversal, Tunnel junction",

author = "Y. Ando and H. Nakamura and S. Mizukami and H. Kubota and T. Miyazaki",

year = "2004",

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doi = "10.1016/j.jmmm.2003.12.1245",

language = "English",

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pages = "293--294",

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T1 - Time-resolved magnetization precession and reversal dynamics investigated using tunneling current and Kerr effect

AU - Ando, Y.

AU - Nakamura, H.

AU - Mizukami, S.

AU - Kubota, H.

AU - Miyazaki, T.

PY - 2004/5

Y1 - 2004/5

N2 - Magnetization precession and reversal dynamics in permalloy (Py) layer was studied using ns-time-scale spin-polarized tunneling current probing and ps-time-scale Kerr microscopy. In the time-resolved magneto-optical Kerr effect measurement, the precessional frequency increased with increasing external static field. The signal was fitted well with the calculation using Landau-Lifshitz-Gilbert equation of motion with the damping parameter α of 0.008, which corresponded to the value obtained for the film measured using a ferromagnetic resonance.

AB - Magnetization precession and reversal dynamics in permalloy (Py) layer was studied using ns-time-scale spin-polarized tunneling current probing and ps-time-scale Kerr microscopy. In the time-resolved magneto-optical Kerr effect measurement, the precessional frequency increased with increasing external static field. The signal was fitted well with the calculation using Landau-Lifshitz-Gilbert equation of motion with the damping parameter α of 0.008, which corresponded to the value obtained for the film measured using a ferromagnetic resonance.

KW - FMR

KW - Gilbert damping

KW - Precession

KW - Reversal

KW - Tunnel junction

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