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Hysteresis loops along easy-axis direction for 30 nm Fe–Gd and Fe–Tb thin films.
Saturation magnetization (Ms ) for the Fe–Gd (hollow triangles) and Fe–Tb (open circles) films.
Angular dependences of resonance field H res (a) and (c), and linewidth ΔHpp (b) and (d) on out-of-plane orientation θ H with increasing Gd and Tb content, respectively. The hollow marks are experimental data and the solid lines are theoretical curves. The inset (e) shows the angular dependence of different linewidth contributions with 13% Gd.
Parameters of Fe–Gd and Fe–Tb films obtained by fitting the FMR data.
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