Answer:

METGLAS alloys can be annealed to obtain square, round or completely sheared BH loops. This is not the case with ferrites. Amorphous alloys can give linear, sheared BH loops which are useful in current measuring devices. Many of the amorphous alloys have higher saturation induction and Curie temperatures. Higher saturation induction translates into smaller core. Higher Curie temp makes it possible to use the amorphous cores at higher operating temperatures.