Micromagnetic model for magnetisation processes in RE–TM based-amorphous alloys

Abstract A micromagnetic model and its results for Nd 90- x Fe x Al 10 ( x =40–50) amorphous alloys are presented. The high coercive field of this type of alloys can be explained using the real values of the materials constants (distances between atoms, magnetic moments and exchange constants). The morphology of the sample plays an important role—the formation of Fe clusters and the cooperative switching behaviour further increase the coercive field value.