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

• 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

• Miyazaki Terunobu

  Tohoku University, Graduate School of Engineering

Bibliographic Information

Other Title

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

Abstract

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 α for Cu/Ni₈₀Fe₂₀/Cu multilayers was independent of the thickness of Ni₈₀Fe₂₀. While α for Pt/Ni₈₀Fe₂₀/Pt multilayers was enhanced as Ni₈₀Fe₂₀ layer became thinner. These experimental data were well fitted by LLG calculation with the same α obtained by ferromagnetic resonance (FMR).

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 43 (6B), L787-L789, 2004

  The Japan Society of Applied Physics

Keywords

• time-resolved Kerr effect
• pump-probe
• magnetic dynamics
• Ni<SUB>80</SUB>Fe<SUB>20</SUB>
• magnetization precession
• Gilbert damping constant

Details

• CRID: 1390001206263947520
• NII Article ID: 210000057322
• NII Article ID: 10013161343
• NII Article ID: 130004532314
• NII Book ID: AA11906093
• DOI: 10.1143/jjap.43.l787
• ISSN: 13474065
• ISSN: 00214922
• ISSN: http://id.crossref.org/issn/00214922
• NDL BIB ID: 6971763
• Web Site: http://id.ndl.go.jp/bib/6971763
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6971763
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.L787
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.L787/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed