This study presents how different nanostructures of starting Nd-Fe-B particles have influence on magnetic properties of polymerbonded\r\nNd-Fe-B materials. Two types of nanocrystalline Nd-Fe-B alloys were used for polymer composite production by\r\ncompression molding technique. The particles with low neodymium content (Nd-low) have nanocomposite structure with small\r\nexchange coupling effect between hard and soft magnetic phase. In other hand, practically monophase hard magnetic structure\r\nof Nd-Fe-B particles with stoichiometric neodymium content (Nd-stoich) shows improved magnetic properties. With increasing\r\nconcentration of polymer matrix, the coercivity (Hcb), remanence (Br), and maximum energy product ((BH)max) decrease more\r\nprominenty for composites with stoichiometric Nd-Fe-B content.
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