Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3549704
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- JSPS
- Grants-in-Aid for Scientific Research [21246001] Funding Source: KAKEN
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Fast magnetization precession is observed in L1(0)-FePt alloy epitaxial thin films excited and detected by all-optical means. The precession frequency varies from 45 to 65 GHz depending on the applied magnetic field strength and direction, which can be explained by a uniform precession model taking account of first- and second-order uniaxial magnetic anisotropy. The lowest effective Gilbert damping constant has a minimum value of 0.055, which is about half that in Co/Pt multilayers and is comparable to Ni/Co multilayers with perpendicular magnetic anisotropy. (C) 2011 American Institute of Physics. [doi:10.1063/1.3549704]
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