The diffusion of 35S in ZnS crystals was studied between 740 and 1100C by using an autoradiography technique. At a sulphur pressure of 0.5atm, the data were described by:

D(cm2/s) = 8 x 10-5 exp[2.2(eV)/kT]

was obtained. Diffusivity increased with increasing sulphur pressure.

H.Gobrecht, H.Nelkowski, J.W.Baars, M.Weigt: Solid State Communications, 1967, 5[9], 777-8