Influence of Interparticle Interactions on the Frequency–Field Diagrams of the Imaginary Component of Magnetic Susceptibility of Nickel Ferrite Nanoparticles
Stolyar, S.V., Shokhrina, A.O., Li, O.A., (...), Boev, N.M., Volochaev, M.N.// Bulletin of the Russian Academy of Sciences Physics//
https://doi.org/10.1134/S1062873825713182
Nickel ferrite powders with a particle size of 4 nm were prepared by chemical coprecipitation. The imaginary part �″ of the magnetic susceptibility was measured at room temperature with a broadband ferromagnetic resonance spectrometer in the frequency range from 100 MHz to 10 GHz. The obtained frequency dependences of �″ are described within the framework of an isotropic superparamagnet model taking into account interparticle interactions.