The diffusivity of 88Y3+ was studied (table 154). Theoretical equations for transport processes, in alkali halides doped with a trivalent cation, were derived from the theory of crystals doped with divalent cations. The jump frequency of Y3+ was given by f(/s) = 1.37 x 1013exp[-0.98(eV)/kT].

F.Bénière, R.Rokbani: Journal of the Physics and Chemistry of Solids, 1975, 36[11], 1151-60

 

 

Table 154

Diffusivity of 88Y3+ in the Intrinsic Range of Pure NaCl

 

Temperature (C)

D (cm2/s)

781.2

7.15 x 10-9

767.1

6.05 x 10-9

762.6

5.91 x 10-9

745.1

5.07 x 10-9

720.6

3.43 x 10-9

698.7

2.65 x 10-9

685.2

2.34 x 10-9

665.4

1.72 x 10-9

648.1

1.34 x 10-9

634.7

1.10 x 10-9

620.4

8.80 x 10-10

615.8

8.30 x 10-10

592.7

5.60 x 10-10

558.5

3.60 x 10-10