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

doi:10.1143/APEX.3.123001

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 journal › Article › peer-review

45 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 language	English
Article number	123001
Journal	Applied Physics Express
Volume	3
Issue number	12
DOIs	https://doi.org/10.1143/APEX.3.123001
Publication status	Published - 2010 Dec

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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

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.",

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

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language = "English",

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AU - Mizukami, Shigemi

AU - Watanabe, Daisuke

AU - Kubota, Takahide

AU - Zhang, Xianmin

AU - Naganuma, Hiroshi

AU - Oogane, Mikihiko

AU - Ando, Yasuo

AU - Miyazaki, Terunobu

PY - 2010/12

Y1 - 2010/12

N2 - 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.

AB - 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.

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

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