The self-diffusion coefficient of oxygen in polished slices of Verneuil single-crystals was determined at 1500 to 1770C by using the gas-solid isotope exchange technique. The results were represented by:

D(cm2/s) = 1.12 x 103exp[-155000/RT]

Y.Oishi, K.Ando, Y.Kubota: The Journal of Chemical Physics, 1980, 73[3], 1410-2