Recovery of the NMR Signal of Plastically Deformed Alkalijodide Single Crystals

0. Kanert 1  and D. Kotzur 1
  • 1 Physikalisches Institut der Universität Münster

Abstract

The annealing process of plastically deformed RbJ-and KJ-single crystals has been studied by means of NMR wide line and spin echo measurements on J127 . The mean lattice strain produced by the deformation is correlated with a mean quadrupole perturbation affecting the NMR signal. Resulting from second order quadrupole effects, the wide line measurements lead to a recovery temperature, which is much lower than the "real" recovery temperature given by the spin echo method. Nevertheless the evaluation of both types of measurements results in the same effective activation energy depending on the degree of deformation. The obtained values are probably caused by the migration of positive ion vacancies.

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A Journal of Physical Sciences: Zeitschrift für Naturforschung A (ZNA) is an international scientific journal which publishes original research papers from all areas of experimental and theoretical physics. In accordance with the name of the journal, which means “Journal for Natural Sciences”, manuscripts submitted to ZNA should have a tangible connection to actual physical phenomena.

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