Magnetic properties of SmCo/sub 7//Co and Sm(Co, Fe)/sub 7///spl alpha/-(Fe, Co) nanocomposite magnets prepared by magnetic anneal

In this paper the effect of applying a magnetic field during the crystallization process of mechanically milled SmCo/sub 9.5/ and Sm(Co/sub 0.88/Fe/sub 0.12/)/sub 9.5/ alloys on the nanostructure, exchange coupling, and magnetic properties has been studied. There was a noticeable improvement in the intrinsic coercivity /sub i/H/sub c/, the remanence B/sub r/, and the maximum magnetic energy product (BH)/sub max/ for SmCo/sub 9.5/ and Sm(Co/sub 0.88/Fe/sub 0.12/)/sub 9.5/ alloys annealed in a magnetic field of 10 kOe were obtained. Better rectangularity of demagnetization curves was also observed for SmCo/sub 9.5/ and Sm(Co/sub 0.88/Fe/sub 0.12/)/sub 9.5/ after the annealing treatment.