Magnetic and microstructural properties of the mechanically alloyed Fe57Co21Nb7B15 powder mixture

► We use the Rietveld refinement for accurate analysis of the complex XRD patterns of the mechanically alloyed FeCoNbB powders. ► Soft magnetic nanocomposite materials can be obtained by mechanical alloying. ► Microstructural and structural parameters are correlated to the magnetic properties.