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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
Authors
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
2013-07-08
Citation
Applied Physics Letters, 103(2)
Type
Article
Article Type
Article
Keywords
AnisotropyCrystalline MaterialsDampingExternal Magnetic FieldGilbert DampingGilbert Damping ConstantLinear RelationshipsMagnetosMulti-Layer SystemMulti-LayersSpin Orbit InteractionsTime-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.
URI
http://hdl.handle.net/20.500.11750/3223
DOI
10.1063/1.4813542
Publisher
American Institute of Physics Publishing
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles
Emerging Materials ScienceETC1. Journal Articles


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