MAGNETIC-PROPERTIES OF RF-SPUTTERED FE(N) NIFECO(N) FILMS/

The magnetic properties of iron films can be made softer by depositing multilayers with NiFeCo and by adding nitrogen to the films. In both cases the average grain size of the iron film is reduced. The anisotro py field, Hk, of Fe(N)/NiFeCo(N) films is shown to be a weighted avera ge of the anisotropy fields of the constituent films, consistent with strong ferromagnetic coupling between the layers. Hk and the easy-axis coercivity, Hce, were significantly reduced by annealing. Both Hk and Hce increased with decreasing thickness below 0.5 mum. The saturation magnetostriction, lambdas. increased with annealing, indicating the g rowth of interdiffusion zones.