ESR Study of Silver Chloride Crystals Doped with Sulphur Ions and Mercury Ions

概要

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Sulphur centers in silver chloride crystals are studied by ESR measurements and also observation of their kinetic behaviors. The paramagnetic centers produced by illumination have a symmetry axis of <100> and g values of g_&⫽=1.999 and g_&⊥=2.03l. They are ascribed to AgS radicals substituting for AgCl molecules in the crystal. The activation energy of formation of the photoproduced ESR signals is 0.22-0.28 eV, and that of thermal bleaching is about 0.75 eV. These centers are considered as produced by trapping the holes and liberating the interstitial silver ions. The initial sulphur centers are guessed as AgS-Ag^+ complexes formed under the condition of excess silver ions. The effects of hyperfine interaction by S^<33> isotopes are preliminarily described, in which the splitting constants are several gauss in both directions of the main axis of the g tensor.
社団法人応用物理学会の論文
1972-02-05