Magnetic Properties of Amorphous Nanocrystalline Alloys Based on Iron with Different Contents of Nobium in Structural Relaxation Processes

Magnetic properties of amorphous nanocrystalline alloy Fe–(Cu, Nb)–(Si, B) during stepwise annealing are investigated by means of X-ray diffraction analysis, vibration magnetometry, and Mössbauer spectroscopy. It is shown that an increase of the Nb content reduces the amount of the nanocrystalline component in the alloy, stabilizing the amorphous state and magnetic softness during structural relaxation.