The diffusive behavior of Li in single crystals was studied at 610 to 960C. The results could be described by:

D (cm2/s) = 3.0 x 10-6 exp[-0.68(eV)/kT]

E.R.Dobrovinskaya, N.I.Krainyukov, Y.A.Obukhovski: Ukrayinskyi Fizychnyi Zhurnal, 1968, 13, 861-2