Gilbert damping in NiFeGd compounds: Ferromagnetic resonance versus time-resolved spectroscopy


Gilbert damping in NiFeGd compounds: Ferromagnetic resonance versus time-resolved spectroscopy

Salikhov, R.; Alekhin, A.; Parpiiev, T.; Pezeril, T.; Makarov, D.; Abrudan, R.; Meckenstock, R.; Radu, F.; Farle, M.; Zabel, H.; Temnov, V. V.

Engineering the magnetic properties (Gilbert damping, saturation magnetization, exchange stiffness, and
magnetic anisotropy) of multicomponent magnetic compounds plays a key role in fundamental magnetism
and its applications. Here, we perform a systematic study of (Ni81Fe19 )100−xGdx films with x = 0%, 5%, 9%,
and 13% using ferromagnetic resonance (FMR), element-specific time-resolved x-ray magnetic resonance, and
femtosecond time-resolved magneto-optical pump-probe techniques. The comparative analysis of field and
time domain FMR methods, with complimentary information extracted from the dynamics of high-frequency
exchange magnons in ferromagnetic thin films, is used to investigate the dependence of Gilbert damping on the
Gd concentration.

Keywords: Gilbert damping; Ferromagnetic resonance

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Permalink: https://www.hzdr.de/publications/Publ-30263
Publ.-Id: 30263