By using the serial sectioning technique, the diffusion coefficients for carrier-free 54Mn in pure halide single crystals were measured in the intrinsic conductivity region as a function of temperature. The data, for temperatures ranging from 880 to 1010K, could be described by:

D (cm2/s) = 1.63 x 10-2 exp[-1.366(eV)/kT]

Isothermal Diffusion of 54Mn in Pure NaCl and KCl and of 85Sr in KCl. S.J.C.Rushbrook-Williams, A.R.Allnatt: Journal of Physics - C, 1977, 10[8], 1151-7

 

Table 72

Diffusion Parameters for Tl+ Ions in Pure and Doped KCl Powders

 

Sample

Dopant

C (mol%)

Do (cm2/s)

Q (kcal/mol)

melt-grown

Ba2+

1.59 x 10-3

100

28.7

melt-grown

Ba2+

4.13 x 10-2

22

27.4

melt-grown

Ba2+

6.6 x 10-2

317

29.4

melt-grown

Sr2+

9.6 x 10-2

159

29.2

as-received

-

-

1.26 x 104

32.8

washed

-

-

2.24

25.0

solution-grown

Ba2+

1.16 x 10-2

2 x 105

35.8

solution-grown

Sr2+

1.85 x 10-2

1.0 x 105

35.4

recrystallized

-

-

3.2 x 104

33.8

dried

-

-

6.3 x 105

37.0

dried and washed

-

-

388

29.8

dried

Ba2+

6.4 x 10-3

1.4 x 105

35.6