The so-called leaky tube method was used to diffuse elemental Cd into InP at 500C, and the junction depths were determined after various times. It was found that the diffusion coefficient was concentration-dependent, and ranged from about 10-14 to 10-10cm2/s.

C.B.Wheeler, R.J.Roedel, R.W.Nelson, S.N.Schauer, P.Williams: Journal of Applied Physics, 1990, 68[3], 969-72