Correlation Between Ultrafast Demagnetization Process and Gilbert Damping in Amorphous TbFeCo Films

Correlation Between Ultrafast Demagnetization Process and Gilbert Damping in Amorphous TbFeCo Films

Ultrafast spin dynamics in Tb x (FeCo) 1-x films is studied using the time-resolved magneto-optical Kerr effect. At pump fluence of 1.0 mJ/cm 2 the ultrafast demagnetization processes are accomplished by one-step and two-step decays (the first fast and second slow decays) for low and high Tb content...

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Veröffentlicht in:IEEE transactions on magnetics 2013-07, Vol.49 (7), p.3159-3162
Hauptverfasser: Ren, Y., Zuo, Y. L., Si, M. S., Zhang, Z. Z., Jin, Q. Y., Zhou, S. M.
Format: Artikel
Sprache:eng
Schlagworte:
Couplings
Cross-disciplinary physics: materials science
rheology
Damping
Demagnetization
Exact sciences and technology
Gilbert damping
Iron
Magnetism
Magnetomechanical effects
Materials science
Other topics in materials science
Physics
TbFeCo films
time-resolved magneto-optical Kerr effect (TRMOKE)
Transient analysis
ultrafast spin dynamics
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Zusammenfassung:Ultrafast spin dynamics in Tb x (FeCo) 1-x films is studied using the time-resolved magneto-optical Kerr effect. At pump fluence of 1.0 mJ/cm 2 the ultrafast demagnetization processes are accomplished by one-step and two-step decays (the first fast and second slow decays) for low and high Tb contents, respectively. For the low Tb contents (x
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2013.2239269