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Influence of the orientation of anisotropic impurity–vacancy complexes upon dislocation charging in NaCl crystals

✍ Scribed by E. L. Andronikashvili; M. V. Galustashvili

Publisher: John Wiley and Sons
Year: 1983
Tongue: English
Weight: 263 KB
Volume: 116
Category: Article
ISSN: 0370-1972
DOI: 10.1002/pssb.2221160139

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✦ Synopsis

Abstract

Electrical effects are investigated observed during charged dislocation motion in NaCl crystals containing impurity–vacancy dipoles oriented in an electric field (E = 12 kV/cm). It is shown that the efficiency of dislocation charging, i.e. vacancy absorption from the dipole by the dislocation, depends on the mutual orientation of the dipole and the moving dislocation. The data obtained can be explained within a model taking into account both the elastic dislocation–dipole interaction and the electrostatic interaction of the dipole components of opposite charges.

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The association energy of aggregates of

The association energy of aggregates of divalent impurities and vacancies in NaCl-type crystals (point charge approximation)

✍ Dr. G. Berg; Dozent Dr. habil. F. Fröhlich; S. Siebenhüner 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 286 KB 👁 2 views

## Abstract The formation and association energies for the different aggregates of divalent metal impurities and cation vacancies are derived by considerations of the sums over all lattice vectors. This gives a simple formula in the point charge approximation if an infinite lattice is assumed. Beca