A radioactive tracer and sectioning technique was used to study impurity diffusion, and the isotope effect for 6Li and 7Li diffusion, in single crystals (tables 51 and 52). The data, for temperatures ranging from 200 to 400C, could be described by:

D (cm2/s) = 10 exp[-1.035(eV)/kT]

V.B.Ptashnik, A.N.Naumov: Fizika Tverdogo Tela, 1970, 12[5], 1496-8

 

 

Table 51

Impurity Tracer Diffusion of Li in AgCl Single Crystals

 

Temperature (C)

D (cm2/s)

200

1.05 x 10-10

250

9.0 x 10-10

300

9.0 x 10-9

350

4.1 x 10-8

400

1.66 x 10-7

 

 

Table 52

Isotope Effect for 6Li and 7Li Diffusion in AgCl Single Crystals

 

Temperature (C)

Isotope Effect

203

0.88

251

0.70

298

0.74

351

0.69

393

0.75