A study was made of the diffusion of Cu, from CuCl vapor, into single crystals. It was found that, at 350 to 650C, the diffusion data could be described by:

D (cm2/s) = 3.38 x 101 exp[-1.43(eV)/kT]

K.Haneda, T.Ikeda, S.Yoshida: Journal of the Physical Society of Japan, 1968, 25, 643