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Relationship between Gilbert damping and magneto-crystalline anisotropy in a Ti-buffered Co/Ni multilayer system
- Relationship between Gilbert damping and magneto-crystalline anisotropy in a Ti-buffered Co/Ni multilayer system
- Song, HS[Song, Hyon-Seok]; Lee, KD[Lee, Kyeong-Dong]; Sohn, JW[Sohn, Jeong-Woo]; Yang, SH[Yang, See-Hun]; Parkin, SSP[Parkin, Stuart S. P.]; You, CY[You, Chun-Yeol]; Shin, SC[Shin, Sung-Chul]
- DGIST Authors
- Song, HS[Song, Hyon-Seok]; Sohn, JW[Sohn, Jeong-Woo]; Shin, SC[Shin, Sung-Chul]
- Issue Date
- Applied Physics Letters, 103(2)
- Article Type
- Anisotropy; Crystalline Materials; Damping; External Magnetic Field; Gilbert Damping; Gilbert Damping Constant; Linear Relationships; Magnetos; Multi-Layer System; Multi-Layers; Spin Orbit Interactions; Time-Resolved
- The relationship between Gilbert damping and magneto-crystalline anisotropy is studied here using an all-optical method in a perpendicular Co/Ni multilayer system by varying the Ti-buffer thickness. As the Ti-buffer thickness increases, the magneto-crystalline anisotropy is enhanced. The time-resolved Kerr signal of each sample is well described by its own intrinsic Gilbert damping constant in a wide range of the external magnetic field. Interestingly, we find that Gilbert damping constants increase linearly from 0.021 to 0.036 when the magneto-crystalline anisotropy of the samples varies from 2.4 to 3.4 Merg/cm3. Such a linear relationship implies that the spin-orbit interaction is the main source of the damping process through spin-lattice relaxation in our system. © 2013 AIP Publishing LLC.
- American Institute of Physics Publishing
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Emerging Materials ScienceETC1. Journal Articles
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