The diffusive behavior of Li was studied at 300 to 550C, under hydrostatic pressures of up to 45kbar. The results could be described by:

25C, 0kbar:     D (cm2/s) = 7.30 x 10-4 exp[-10.8(kcal/mol)/RT]

327C, 0kbar:     D (cm2/s) = 1.78 x 10-3 exp[-11.6(kcal/mol)/RT]

527C, 0kbar:     D (cm2/s) = 3.19 x 10-3 exp[-12.4(kcal/mol)/RT]

25C, 50kbar:     D (cm2/s) = 1.50 x 10-4 exp[-9.7(kcal/mol)/RT]

327C, 50kbar:     D (cm2/s) = 3.70 x 10-4 exp[-10.6(kcal/mol)/RT]

527C, 50kbar:     D (cm2/s) = 6.70 x 10-4 exp[-11.4(kcal/mol)/RT]

H.B.Vanfleet, D.L.Decker, H.R.Curtin: Physical Review B, 1972, 5[12], 4849-56

The best linear fits to the solute diffusion data ([93] to [120]) yield:

H: Ln[Do] = 0.89E – 33.6 (R2 = 0.92); Li: Ln[Do] = 1.06E – 18.8 (R2 = 0.95);

Sb: Ln[Do] = 0.30E – 14.5 (R2 = 0.63)