On the determination of dislocation densities in NaCl single crystals from quadrupolar linewidth measurements
- 1 August 1982
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 46 (2) , 327-344
- https://doi.org/10.1080/01418618208239922
Abstract
The N.M.R. quadrupolar linewidth is determined both experimentally and theoretically for dislocations on {110} and {100} slip planes in NaCl single crystals, compressed in different directions. Specifically, the electric field gradients (E3.G.s) around dislocations are calculated using the proportionality between the E.F.G.s and the stress fields around dislocations. The latter are taken from linear anisotropic elasticity theory. The results are compared with measurements on crystals compressed in different directions in which the quadrupolar linewidth is determined as a function of the direction of the external magnetic field. As a result, the dislocation densities and the amount of slip on the different planes are found.Keywords
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