Abstract
A theory for the tracer self-diffusion by a vacancy mechanism in the wurtzitelattice is developed into which the effects of Bardeen-Herring correlation are included in a rigorous way. The isotope effect parameter is calculated for the limiting case in which the jump process may be treated as the jump of an individual particle and by means of classical statistics.
As an interesting example self-diffusion in hexagonal ice is considered which occurs by exchange of entire water molecules with molecular vacancies.
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Mehrer, H. Theory of tracer-diffusion in the wurtzite-structure with applications to hexagonal ice. Z Physik B 20, 281–288 (1975). https://doi.org/10.1007/BF01352590
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DOI: https://doi.org/10.1007/BF01352590