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Isotope Effect and Divacancies for Self‐Diffusion in Copper
Author(s) -
Rothman S. J.,
Peterson N. L.
Publication year - 1969
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19690350131
Subject(s) - copper , diffusion , isotope , self diffusion , kinetic isotope effect , materials science , effective diffusion coefficient , chemistry , analytical chemistry (journal) , thermodynamics , metallurgy , atomic physics , deuterium , nuclear physics , chromatography , physics , medicine , self service , business , radiology , marketing , magnetic resonance imaging
The simultaneous diffusion of 64 Cu and 67 Cu has been measured in copper single crystals from 890 to 1061 °C. The strength of the isotope effect f Δ K is 0.684 ± 0.014 and is independent of temperature within the experimental error. This indicates that the contribution of divacancies to self‐diffusion in copper is small. The diffusion coefficient of 67 Cu in copper single crystals was measured from 700 to 1060 °C and is given by\documentclass{article}\pagestyle{empty}\begin{document}$$ D = 0.78\exp \{ - (2.19 \pm 0.01)/kT\} {\rm cm}^{\rm 2} /{\rm s} $$\end{document} .