Interacting superparamagnetic nanoparticles in the Cu-1%Co single crystal

► We study the magnetic interactions between Co nanoparticles in the non-magnetic Cu matrix. ► We use the interacting superparamagnetic particles model and calculate the magnetization curve. ► The true nanoparticles size distribution is determined. ► The scaling procedure related to the interaction field is introduced. ► Good correlation between the theoretical and experimental data validates the applied model.