Migration in the amorphous alloy was studied, at 575 to 643K, by using secondary ion mass spectrometry. The measurements were performed on pre-relaxed specimens, and it was found that the results could be described by:

D (cm2/s) = 7.0 x 1010 exp[-3.39(eV)/kT]

It was suggested that the diffusion mechanism involved the cooperative motion of groups of atoms.

S.K.Sharma, M.P.Macht, V.Naundorf: Acta Metallurgica et Materialia, 1992, 40[9], 2439-49