The book proposed to the readers attention represents an attempt to state and systematize extensive material of our experimental and theoretical investigations of heteromagnetic interactions in ferrite semiconductor structures of the active type carried out at the department of general physics, Saratov State University named after N.G. Chernyshevskiyandin the Design of ceof critical technologies(DO CT) of SRI Tantal Corp. of the Holding company Tantal in recent years. The novelty and complexity of the physical phenomena determined the high-technologychar- ter ofourinvestigationsat the jointof...