It was noted that the diffusion of 65Zn in the disordered A2 phase did not exhibit an Arrhenius behavior. The data could be described by the expression:

D (cm2/s) = 0.0046 exp[-82.182(kJ/mol)/RT]

at temperatures of between 508 and 692C, and by:

D (cm2/s) = 0.01 exp[-105.557(kJ/mol)/RT]

at temperatures of between 692 and 826C. It was suggested that the observed behavior could be attributed to the influence of di-vacancies.

A.Jennane, C.Lexcellent, G.Moya, J.Bernardini: Journal de Physique IV, 1996, 6[2], 103-7