Cryogenic effects in the amorphous Curie temperature shift of Fe-based glassy alloys

Continuing the earlier experiments, a series of new effects will be presented in this paper which demonstrate, that the amorphous Curie temperature ( T-C(am)) can be altered by resting the samples at low temperature such as (liquid N-2, 77 K). The sign and magnitude of this shift depends on the alloy composition, but can also be influenced by the rate of liquid quench applied during the ribbon formation. T-C(am) is lowered during liquid N-2 treatments for the binary Fe85B15 glass. The effect is the same when a small amount of Si is added to the Fe85B15. Exceeding the critical concentration limit of the Si, the sign of T-C(am) changes.