Sm/sub 2/Fe/sub 17/N/sub 3/ magnet powder made by reduction and diffusion method

Abstract

High performance Sm/sub 2/Fe/sub 17/N/sub 3/ magnet powder is developed by a reduction and diffusion method. Typical remanence, coercivity and maximum energy product obtained are 1.40 T, 1.13 T and 323 kJ/m/sup 3/, respectively. Decreasing samarium content, oxygen content and the amount of /spl alpha/-Fe are found to be the important factors to realize high energy product.