Migration was studied by using deep-level transient spectroscopic techniques, or by determining the diffusion profiles of a deep level within depletion regions. The profiles could be accurately described by solutions of Fick's equation. Near to room temperature, the diffusivity of Fe was studied by monitoring pair reactions with substitutional B. It was found that the results, at temperatures ranging from 273 to 1343K, could be described by:

D(cm2/s) = 1.1 x 10-3exp[-0.66(eV)/kT]

H.Nakashima, K.Hashimoto: Materials Science Forum, 1992, 83-87, 227-32