The comparative study of Nd-Fe-B magnetic materials with different Nd content

For better understanding of different Nd content effect on the magnetic properties of three types commercial Nd-Fe-B alloys with 10-12 wt% Nd (Nd-low), 21-25 wt% (Nd-stoich.), and 26-29 wt% Nd (Nd-rich) were simultaneously analyzed using X-Ray and 57Fe Mossbauer spectroscopy (MS) analysis. The observation was based on correlation of starting chemical composition with phase composition and magnetic properties in optimized magnetic state.