The diffusion of Ce was measured by using tracer and serial sectioning techniques. It was found that the diffusivity (table 30) obeyed an Arrhenius relationship which could be described by:

D (cm2/s) = 0.0011 exp[-0.62(eV)/kT]

It was suggested that the Ce atoms entered the lattice as 3+ ions at substitutional sites, and diffused as an associated complex with cation vacancies. Mass and Charge Transport in AgCl·Ce3+ System. A.L.Laskar, K.V.Reddy, G.A.Popson: Solid State Ionics, 1988, 28-30, 294-7

 

Table 31

Diffusivity of 36Cl in Pure and Cd-Doped AgCl

 

Temperature (C)

Cd (mol%)

D (cm2/s)

307.4

0

1.35 x 10-12

307.4

0.98

5.80 x 10-13

342.1

0

8.28 x 10-12

342.1

0.89

3.73 x 10-12

342.1

0.94

3.71 x 10-12

342.1

1.05

3.88 x 10-12

383.9

0

5.27 x 10-11

383.9

0.94

3.02 x 10-11

383.9

1.01

3.06 x 10-11

383.9

1.28

3.25 x 10-11

408.3

0

1.48 x 10-10

408.3

0.94

8.82 x 10-11

408.3

1.02

9.14 x 10-11

432.4

0

4.20 x 10-10

432.4

0.91

2.78 x 10-10

432.4

0.96

3.05 x 10-10

432.4

1.00

2.91 x 10-10