Defects Near Ionic Crystal Surfaces

  • Che-Yu Li
  • J. M. Blakely
Conference paper


Changes in the defect distribution on approaching the free surface of a crystal may be of considerable importance in understanding many surface phenomena. A detailed knowledge of the atomic arrangement in the surface region is not readily obtainable from experiment, but it is of interest to investigate from a theoretical viewpoint the influence that point defects are likely to have on certain surface properties. We will discuss here and review some attempts to predict the distribution of point defects in the vicinity of ionic crystal surfaces and examine how some of these ideas may be applied in the treatment of morphological changes governed by capillarity. For simplicity, we will Hmit the discussion to ionic crystals having the NaCl structure and in which only defects of the Schottky type occur.


Creep Rate Frictional Force Anion Vacancy Vacancy Formation Energy Displacement Polarizability 
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  1. 1.
    J. Frenkel, Kinetic Theory of Liquids, Oxford University Press (London), 1946.Google Scholar
  2. 2.
    T. B. Grimley, Proc. Roy. Soc. (London) A201: 40 (1950).Google Scholar
  3. 3.
    K. Lehovec, J. Chem. Phys. 21: 1123 (1953).CrossRefGoogle Scholar
  4. 4.
    A. R. Allnatt, J. Phys. Chem. 68: 1763 (1964).CrossRefGoogle Scholar
  5. 5.
    N. F. Mott and M. J. Littleton, Trans. Faraday Soc. 34: 485 (1938).CrossRefGoogle Scholar
  6. 6.
    J. M. Blakely and Che-Yu Li, Report No. 308, Materials Science Center, Cornell University, Ithaca, N. Y., 1965.Google Scholar
  7. 7.
    G. C. Benson, P. L Freeman, and E. Dempsey, Solid Surfaces, Advances in Chem. Series, No. 33, Am. Chem. Soc. (Washington, D. C), 1961, p. 26.Google Scholar
  8. 8.
    C. Herring, “Surface Tension as a Motivation for Sintering,” in: The Physics of Powder Metallurgy, McGraw-Hill (New York), 1951.Google Scholar
  9. 9.
    W. W. Mullins, “Morphologies Governed by Capillarity,” in: Metal Surfaces, ASM, 1962.Google Scholar
  10. 10.
    W. Nernst, Z. Physik. Chem. (Leipzig) 2: 613 (1888).Google Scholar
  11. 11.
    C. Wagner, Z. Elektrochem. 65: 581 (1961).Google Scholar
  12. 12.
    R. W. Laity, J. Phys. Chem. 67: 671 (1963).CrossRefGoogle Scholar
  13. 13.
    A. L. Ruoff, Report No. 299, Materials Science Center, Cornell University, Ithaca, N. Y., 1965.Google Scholar
  14. 14.
    D. Patterson, G. S. Rose, and J. A. Morrison, Phil. Mag. 46: 393 (1955).Google Scholar
  15. 15.
    J. M. Blakely and Che-Yu Li, “Changes in Morphology of Ionic Crystals Due to Capillarity,” Acta Met. 14: 279 (1966).CrossRefGoogle Scholar

Copyright information

© Plenum Press 1966

Authors and Affiliations

  • Che-Yu Li
    • 1
  • J. M. Blakely
    • 1
  1. 1.Department of Materials Science and EngineeringCornell UniversityIthacaUSA

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