PERMANENT MAGNETIC-PROPERTIES OF MELT-SPUN SM2FE15SI2C

The hard magnetic properties of melt-spun Sm2Fe15Si2C were studied. A coercivity of mu(oi)H(c), = 0.84 T and an energy product of 60 kJ m(-3 ) at room temperature were obtained for a sample prepared at a wheel s peed of 20 m s(-1); correspondingly, the size of crystalline grains in these samples is about 38 nm. The mechanism of coercivity is mainly c ontrolled by the nucleation of reversed domains. The phenomenon of rem anence enhancement was observed in the melt-spun Sm2Fe15Si2C.