Measurement of Magnetization Precession for NM/Ni80Fe20/NM (NM = Cu and Pt) Using Time-Resolved Kerr Effect

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概要

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• Magnetization precession of NM/Ni80Fe20/NM (NM = Cu and Pt) multilayers was measured by the time-resolved magneto-optical Kerr effect (MOKE). A MOKE measurement system equipped with a pulse laser and optical delay lines was set up and samples were combined using a photoconductive switch for pulse field generation. Clear oscillation and relaxation of the magnetization of motion in time domain were successfully observed. Gilbert damping constant $\alpha$ for Cu/Ni80Fe20/Cu multilayers was independent of the thickness of Ni80Fe20. While $\alpha$ for Pt/Ni80Fe20/Pt multilayers was enhanced as Ni80Fe20 layer became thinner. These experimental data were well fitted by LLG calculation with the same $\alpha$ obtained by ferromagnetic resonance (FMR).

• Japan Society of Applied Physicsの論文
• 2004-06-15

著者

• Miyazaki Terunobu

  Tohoku University

• NAKAMURA Hiroaki

  Tohoku University, Graduate School of Engineering

• ANDO Yasuo

  Nihon University, College of Engineering

• MIZUKAMI Shigemi

  Tohoku University, Graduate School of Engineering

• KUBOTA Hitoshi

  Tohoku University, Graduate School of Engineering

• Mizukami Shigemi

  Tohoku University, Graduate School of Engineering, Aoba-yama 05, Sendai 980-8579, Japan

• Miyazaki Terunobu

  Tohoku University, Graduate School of Engineering, Aoba-yama 05, Sendai 980-8579, Japan

• Nakamura Hiroaki

  Tohoku University, Graduate School of Engineering, Aoba-yama 05, Sendai 980-8579, Japan

• Kubota Hitoshi

  Tohoku University, Graduate School of Engineering, Aoba-yama 05, Sendai 980-8579, Japan

関連論文

• Measurement of Magnetization Precession for NM/Ni_Fe_/NM (NM=Cu and Pt) Using Time-Resolved Kerr Effect
• Direct observation of magnetization reversal process in NiFe/Al-O/Co trilayer films using Lorentz transmission electron microscopy and magnetic force microscopy
• Measurement of Magnetization Precession for NM/Ni80Fe20/NM (NM = Cu and Pt) Using Time-Resolved Kerr Effect

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