EFFECT OF Mn-SUBSTITUTION ON MAGNETIC PROPERTIES OF Co-Si-B AND Co-Fe-Si-B AMORPHOUS ALLOYS

The addition of Mn to Co base Si-B amorphous alloys which have higher crystallization point (Tx) than the Curie point (Tc) has been investigated, aiming an enhancement of magnetic induction. It is found that the addition of the small amount of Mn, 0<Mn<3 at %, enhances the magnetic induction. The Tx is increased with the Mn content whereas the Tc is decreased. Thus, we have an improved amorphous alloy having a wide (TX-Tc) with a large magnetic induction