Original scientific paper
Ionic transport in alkali halides with doping-induced defects and colour centre migration by thermal bleaching
Satyajit Kar
Ajay Kumar Maiti
Manjustri Sengupta
Kushalendu Goswami
Abstract
Measurements of ionic conductivity in pure alkali halides and in alkali halides with doping-induced defects were made to determine the activation energies and mobility of F-centres. The activation energies in NaCl:Cd+2 were found large in comparison with NaCl with other divalent impurities. The mobilities of F-centre migration on bleaching of injected electrons were measured and the activation energies of bleaching WF have been found. The results for space-charge-limited conduction of F-centres are explained with the determined values of activation energies W and WF.
Keywords
pure alkali halides; alkali halides with doping-induced defects; divalent impurities; activation energies; mobility of F-centres; space-charge-limited conduction
Hrčak ID:
301091
URI
Publication date:
1.9.2000.
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