Question:
What is Metglas' product?

Answer:

Amorphous metal does not have crystalline structure like other magnetic materials. All the atoms in an amorphous metal are randomly arranged, thus giving it a higher resistivity (about three times) value than that for crystalline counterparts. Amorphous alloys are prepared by cooling the melt at about million degrees per second. This fast cooling does not give the atoms enough time to rearrange into stable crystalline form. As a result one gets metastable amorphous structure. Because of the absence of crystalline structure amorphous alloys are magnetically soft (lower coercivity, lower core loss, higher permeability,...). High resistivity gives lower loss at higher frequencies. The losses are among the lowest of any known magnetic materials.

Planar casting,

rapid solidification,