An attempt to determine the binding energy of point defects and dislocations in sodium chloride by internal friction measurements
- 1 October 1970
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 22 (178) , 809-814
- https://doi.org/10.1080/14786437008220949
Abstract
An attempt has been made to measure the binding energy of point defects and dislocations in sodium chloride by employing the Granato and Lücke theory of internal friction. Three problems have been encountered in interpreting the experimental results. First, the calculated energies are an order of magnitude larger than those obtained by other workers. Second, they are negative and thus suggest a repulsion instead of an attraction. Third, the value calculated from the intercepts of Granato-Lücke plots disagrees with that obtained from the slopes. Solutions are suggested for the first two problems, but we are unable to explain the third. Under the conditions of this experiment the Granato and Lücke theory is not able to explain the observed behaviour.Keywords
This publication has 4 references indexed in Scilit:
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- Charged Dislocations in Sodium Chloride Single CrystalsPhysica Status Solidi (b), 1963
- The Intensity of Dielectric Absorption in Alkali Halides as a Function of the Concentration of Divalent Cation ImpuritiesAustralian Journal of Physics, 1960
- Theory of Mechanical Damping Due to DislocationsJournal of Applied Physics, 1956