Influence of additives on the magnetic damping constant of CoIr soft magnetic thin films with negative magnetocrystalline anisotropy

Ma Tianyong, Luo Zhi, Li Zhiwei^†, Qiao Liang, Wang Tao^‡, Li Fashen

(a)–(c) Numerical fitting of the linear relation between the applied magnetic field H_app and the square of the resonance frequency f_r. (d) The determined effective in-plane anisotropy field H_u, (e) the total effective out-of-plane anisotropy field H θ , and (f) the magnetocrystalline anisotropy constant K_grain as a function of x.