It was found that the Au diffusivity at between 800 and 1200C could be described by:

D(cm2/s) = 1.1 x 10-3exp[-1.12(eV)/kT]

Solubility and Diffusivity of Gold, Iron, and Copper in Silicon. J.D.Struthers: Journal of Applied Physics, 1956, 27, 1560 and Erratum. J.D.Struthers: Journal of Applied Physics, 1957, 28, 516