Magnetic properties of zero magnetostrictive amorphous Fe-Co-Si-B alloys

The metalloid content dependence of zero magnetostrictive composition of an amorphous (FexCo1−x)100−y(Si0.4B0.6)y alloy in an as-quenched state is experimentally determined. The iron content (x) of the zero magnetostrictive composition was found to decrease with an increase in the metalloid content (y). The Curie temperature and saturation magnetization decrease with an increase in the metalloid content, while crystallization temperature increases. With an increase in the saturation magnetization of the present alloys the coercive force increases as Hc∝M3s.