Magnetic structure and high frequency properties of Fe25Ni75–ZnO film

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 0.5–7GHz 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.