Effect of interface state on the coercivity in Nd-Fe-B magnets

摘要

In view of the rapidly growing demand for high-power motors such as those in electric vehicles, one of the most crucial and urgent subjects in sintered Nd-Fe-B magnets is to achieve higher coercivity without using rare elements such as Dy and Tb. At least two approaches have been reported so far to increase coercivity H_c in sintered Nd-Fe-B magnets.