The effect of C and O precipitation upon the diffusivity of Au in monocrystalline Czochralski- and float-zone material was studied by using infra-red absorption and charged-particle activation analysis methods. It was found that the diffusion of Au was enhanced by the presence of C and/or O precipitates. In the case of Czochralski-type material, the enhancement was attributed to the precipitation of C and O. In the case of float-zone material, the diffusion of Au was not enhanced; due to the lower O precipitation and absence of C precipitation.

Y.Itoh, Y.Sugita, T.Nozaki: Japanese Journal of Applied Physics, 1989, 28[10], 1746-9