The self-diffusion of lithium in molten Li2BeF4 was measured using the capillary reservoir technique with 6Li as a tracer. The concentration profiles of 6Li in a capillary were measured. The results were described by the Arrhenius equation,

D(m2/s) = 9.27 x 10-7 exp[-32.50(kJ/mol)/RT]

N.Iwamoto, Y.Tsunawaki, N.Umesaki, H.Ohno, K.Furukawa: Journal of the Chemical Society - Faraday Transactions 2, 1979, 75, 1277-83