THE EFFECT OF $HfB_{2}$ ON MAGNETIC PROPERTIES OF NANOCOMPOSITE $Fe_{2}Nd_{14}B/Fe_{3}B$ MAGNET

By adding 1wt.% into alloys, the grain growth of composite phases during annealing was found to be hindered by 40~50%. It is proposed that the addition of leads to the formation of fine dispersoids of in the composite magnet. The maximum energy product() as well as intrinsic coercivity() for the alloy were enhanced by more than 25% due to the addition of while remanent magntization() was reduced slightly. Itis deduced that the formation of fine dispersoids will also play a role of magnetic domain pinning.