Cation tracer diffusion coefficients were measured in pure samples in the intrinsic ionic conductivity range of 876 to 970C. The best-fit defect parameters which had been deduced during a previous conductivity study had yielded a free vacancy contribution which was described by:

D (cm2/s) = 4.25 exp[-2.21(eV)/kT]

Combining these data with the present diffusion results (table 175) indicated a vacancy-pair contribution of:

D (cm2/s) = 1.15 x 108 exp[-4.04(eV)/kT]

Study of Cation Tracer Diffusion in NaF. G.P.Pantanelli, D.H.Whitmore: Journal of Physics and Chemistry of Solids, 1974, 35[3], 445-53