The diffusion of Co into single crystals of the compound semiconductor was studied under the conditions of SZnSe-SCoSe-LZn-V phase equilibrium at 700 to 970C, and the diffusion coefficients of Co in (100)- and (111)-oriented single-crystal samples of ZnSe were determined as functions of temperature. The diffusion rate of Co along the [111] direction was shown to exceed that along [100].

Cobalt Diffusion during Doping of ZnSe Single Crystals. N.N.Ilichev, P.V.Shapkin, A.S.Nasibov, S.E.Mosaleva: Inorganic Materials, 2007, 43[10], 1050-3