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Relaxation effects of magnetization modulus and precession axis on damping time of precession in L1(0)-ordered FePt alloy film

Title
Relaxation effects of magnetization modulus and precession axis on damping time of precession in L1(0)-ordered FePt alloy film
Authors
Kim, Ji-WanSong, Hyon-SeokYou, Chun-YeolShin, Sung-Chul
DGIST Authors
Song, Hyon-Seok; You, Chun-Yeol; Shin, Sung-Chul
Issue Date
2017-07
Citation
Current Applied Physics, 17(7), 1009-1013
Type
Article
Article Type
Article
Keywords
DampingDynamicsFast RelaxationIron AlloysL10 Ordered FeptMagnetizationMetallic FilmsNickelOptical Kerr EffectPump IntensitiesRelaxation EffectRelaxation ProcessesReversalTemperatureTime Dependent Magnetization ModulusTime ResolvedTime Resolved Magneto Optical Kerr Effects (MOKE)Time Resolved Magneto Optical Kerr Effects (MOKE)Time DependentTimedependent Precession Axis
ISSN
1567-1739
Abstract
We investigate the relaxation effects of magnetization modulus and precession axis on the damping time of the precession in L10-ordered FePt alloy film using a time-resolved magneto-optical Kerr effect. It is revealed that their fast relaxation processes during the precession bring about the overestimation of the damping time of the precession. We found that this error becomes more significant as the pump intensity increases. We propose that these corrections need to be considered for materials with the fast relaxation dynamics during the precession. © 2017 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/4135
DOI
10.1016/j.cap.2017.01.016
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceSpin Phenomena for Information Nano-devices(SPIN) Lab1. Journal Articles


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