Point Defects and Diffusion

  • P. S. Dobson
Part of the Nato Advanced Study Institutes Series book series (NSSB, volume 19)


Diffusion in solids occurs as a result of a large number of thermally activated atomic jumps from one lattice position to another. When two atoms simply exchange positions large distortions of the crystal are required to allow the atoms to squeeze past each other and the rate of this process is much too small to account for the experimentally observed diffusion rates. In practice the atomic movements involve the cooperation of point defects in the crystal and the diffusion coefficient can be related to the concentration and migration of these defects. Thus diffusion data represents a source of information on these basic point defect properties.


Point Defect Cation Vacancy Migration Energy Diffusion Profile Vacancy Formation Energy 
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  3. “Point Defects in Solids”, Vols. I and II, edited by J.H. Crawford and L.M. Slifkin, (Plenum Press, 1972, 1975 ).Google Scholar
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  5. “Diffusion in Solids - Recent Developments” edited by A.S. Nowick and J.J. Burton, (Academic Press 1975).Google Scholar

Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • P. S. Dobson
    • 1
  1. 1.Department of Physical Metallurgy and Science of MaterialsUniversity of BirminghamBirminghamEngland

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