Laser-induced fast magnetization precession and gilbert damping for CoCrPt alloy thin films with perpendicular magnetic anisotropy

Shigemi Mizukami, Daisuke Watanabe, Takahide Kubota, Xianmin Zhang, Hiroshi Naganuma, Mikihiko Oogane, Yasuo Ando, Terunobu Miyazaki

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

We have investigated magnetic field strength (up to 10 kOe) and angle dependences of spin dynamics in 4-nm-thick films of CoCrPt alloys with perpendicular magnetic anisotropy using the all-optical time-resolved magneto-optical Kerr effect (TRMOKE). The comprehensive TRMOKE measurements have indicated the Gilbert damping constant α of 0.05 for the alloy film with low coercivity. The experiments also indicated that α values for the alloy films deposited at higher temperatures with higher coercivities were also no greater than 0.06.

Original languageEnglish
Article number123001
JournalApplied Physics Express
Volume3
Issue number12
DOIs
Publication statusPublished - 2010 Dec

ASJC Scopus subject areas

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

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