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

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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. (C) 2017 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2017-07
Language
English
Article Type
Article
Keywords

TEMPERATURE; DYNAMICS; REVERSAL; NICKEL

Citation

CURRENT APPLIED PHYSICS, v.17, no.7, pp.1009 - 1013

ISSN
1567-1739
DOI
10.1016/j.cap.2017.01.016
URI
http://hdl.handle.net/10203/224034
Appears in Collection
RIMS Journal Papers
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