Magnetic structure and high frequency properties of Fe25Ni75–ZnO film

Highlights: ► FeNi–ZnO films were fabricated by a Rf magnetron sputtering method. ► The films with 10% ZnO exhibit a small perpendicular anisotropy, higher Hc and stripe domains. ► The films with 27% ZnO possess an in-plane uniaxial anisotropy and lower Hc. - Abstract: Fe25Ni75–ZnO films with ZnO content 10% and 27% were fabricated by a Rf magnetron sputtering method. The static and dynamic magnetic properties of these films have been investigated in detail. The results reveal that the films with 10%ZnO exhibit a small perpendicular anisotropy, higher Hc and stripe domains, and the correlated dynamic permeability spectrum measured over the frequency range of 0.5–7 GHz display multiple permeability peaks. However, the films with 27% ZnO possess an in-plane uniaxial anisotropy and lower Hc. The spectrum of the film can be ascribed to the uniform coherent spin procession.