An expression, 1= 1-2/Z (Z is the coordination number), is well known as an approximate formula for the correlation factor, 1, in tracer diffusion via vacancy mechanism. By taking into account the number of common nearest neighbouring sites of two neighbouring sites in addition to the coordination number, an improved expression is derived. Further, a corresponding expression for f is derived for a lattice consisting of sites with different coordination numbers.
|Number of pages||8|
|Journal||Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties|
|Publication status||Published - Jul 1991|
ASJC Scopus subject areas
- Chemical Engineering(all)
- Physics and Astronomy(all)