High frequency characteristics of (Ni75Fe2) x(ZnO)1− x granular thin films with tunable damping coefficient |
(a) Hysteresis loops measured along the easy axis and hard axis for a typical sample of x = 0.64. (b) Volume fraction x dependence of 4 πM s, H ce, and H ch for (Ni75Fe25) x (ZnO)1− x granular films. The unit 1 Gs = 10−4 T. |