Ferromagnetic Resonance Fine Structure of Dispersed Magnets: Physical Origin and Applications

An original approach is proposed to study the dipole–dipole interparticle interactions in dispersed magnets. It is the registration and analysis of the noiselike ferromagnetic resonance fine structure, which is caused by the magnetic dipole–dipole interaction between magnetic domains. The features of fine structure formation are discussed. The experimental examples of the possible applications of the fine structure method are given. Authors' address: Oleg N. Martyanov, Boreskov Institute of Catalysis, Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russian Federation