The diffusive behavior of O was studied in undoped single crystals. The results depended upon the conductivity type and could be described by:

p/n-type (650-900C):     D (cm2/s) = 6.0 x 10-10 exp[-6.6(kcal/mol)/RT]

p-type (200-650C):     D (cm2/s) = 2.0 x 10-9 exp[-19.0(kcal/mol)/RT]

n-type (200-650C):     D (cm2/s) = 5.6 x 10-9 exp[-29.0(kcal/mol)/RT]

F.F.Vodovatov, G.V.Indenbaum, A.V.Vanyukov: Fizika Tverdogo Tela, 1970, 12[1], 22-5