An amorphous metal is a metallic material with a disordered atomic-scale structure.
In
contrast to most metals, which are crystalline and therefore have a
highly ordered arrangement of atoms, amorphous alloys are
non-crystalline.
Materials in which such a disordered structure is
produced directly from the liquid state during cooling are called
“glasses”, and so amorphous metals are commonly referred to as “metallic
glasses” or “glassy metals”.