A Study of Crystalline Defects and Their Transport in Alkali Azides.
Abstract
Crystalline defects, their transport and interactions with impurities in potassium and rubidium azides have been studied by measuring the electrical conductivity with ac and dc techniques, the diffusion by a tracer sectioning technique and by the measurement of ionic thermo-current (ITC). Methods were developed to grow large and excellent quality single crystals of KN3 and RbN3 by the Kyropolous and solution growth techniques. The defect structure in both KN3 and RbN3 is determined to be Schottky type. The anisotropy in the ionic transport was studied by measuring the diffusion of Rb(+) in RbN3 parallel and normal to the c-axis. The relaxation modes of the impurity-vacancy dipoles were measured by the ITC technique in KN3 samples doped with Cu(+2) , Ca(+2), Co(+2), Pb(+2) and Ni(+2) and in RbN3 samples doped with Ba(2+). The preliminary results of the anisotropic diffusion of Ag(+) in KN3 and anion diffusion experiments are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1979
- Accession Number
- ADA068117
Entities
People
- A. L. Laskar
Organizations
- Clemson University