Intrinsic and Domain Magnetism in Nanocrystalline Materials

Magnetic properties of individual nanoparticles, their ensembles, nanocomposites and nanocrystalline homogeneous ferromagnets are reviewed. Size effects in the intrinsic magnetic properties (Curie-temperature, saturation magnetization) and in the domain magnetism (coercitivity, hysteresis, remanence) are treated from elementary basic principles to the description of complex systems such as interacting magnetic clusters. By examples taken form the recent literature the most hot topics of the field are illustrated, and more recent or expected applications are also mentioned.