Damping and ferromagnetic resonance linewidth broadening in nanocrystalline soft ferromagnetic Fe–Co–Hf–N films

Seemann, K.; Leiste, H.; Kovács, András

doi:10.1016/j.jmmm.2008.03.005

Cited by 21 publications

(1 citation statement)

References 19 publications

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“…4 The tuning of damping is always an important issue in the high-frequency dynamics of soft magnetic thin films. 5 For many of the potential applications of magnetic thin films, such as for notch filters, a low damping is a pursued; 6 however, for various other applications, including for band-stop filters, a fast relaxation or settling time is favored. 7 Doping some non-magnetic compositions or diluting the ferromagnetic elements is always a first choice in realizing an effective tuning.…”

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confidence: 99%

Tuning of magnetization dynamics in sputtered CoFeB thin film by gas pressure

Huang

Liao

et al. 2012

Journal of Applied Physics

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The influences of sputtering gas pressure on the high-frequency magnetization dynamics of as-sputtered CoFeB thin films are studied with permeability spectra based on the Landau-Lifshitz-Gilbert (LLG) equation. Results show that with the pressure increasing, both the anisotropy field and resonance frequency have minimums, while the initial permeability shows a maximum. The damping factor deceases monotonously with the pressure increasing, similar as with the coercivity. The high tunability of the damping factor indicates that controlling sputtering gas pressure could be an effective method in tuning the magnetization dynamics. All these dependences on gas pressure are suggested to be related to the inner stress of these sputtered films.

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confidence: 99%