Relationship between Gilbert damping and magneto-crystalline anisotropy in a Ti-buffered Co/Ni multilayer system
- Title
- Relationship between Gilbert damping and magneto-crystalline anisotropy in a Ti-buffered Co/Ni multilayer system
- Author(s)
- 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]
- Issued Date
- 2013-07-08
- Type
- Article
- Article Type
- Article
- Subject
- 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
- ISSN
- 0003-6951
- Abstract
- 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.
- Publisher
- American Institute of Physics Publishing
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- Appears in Collections:
- ETC 1. Journal Articles
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