Using secondary ion mass spectroscopy, diffusion of magnesium impurity in lithium fluoride is investigated. A temperature dependence of the magnesium diffusion coefficients within the temperature interval 870-1073 K is established, which is described by an expression of the following type: D = 2.8·10 -3 ·exp(-1.5/kT). Combining the data on self-diffusion of cations with the results of the ion conductivity measurements, estimation is made of the thermodynamic parameters characterizing the jump of a diffusant. The calculated frequencies of the impurity ion jump to the cation vacancy are reported.
|Number of pages||5|
|Journal||Russian Physics Journal|
|Publication status||Published - 2002|
ASJC Scopus subject areas
- Physics and Astronomy(all)