Intergranule Interaction in Magnetic Granular Films

Magnetic granular films consist of nanoscale magnetic granules embedded in an insulator or in an immiscible metal. The advantage of granular films is that there exists abundant interface between magnetic granules and the matrix with unique microstructures. The physical properties in these systems can be tailored by adjusting the composition, volume fraction of constituent materials, and preparation conditions. In this paper, some results on domain observation in Co35(SiO2)65 granular film and spin-wave resonance in FeSiO2 granular film will be presented, which may be helpful to understand the intergranule interaction in magnetic granular systems.