Untersuchungen zur Fehlordnung von NH4 Cl-Kristallen

Abstract

Results of measurements of thedc andac-conductivity and of the thermally stimulated depolarization carried out on undoped, NiCl2-doped and NH3-saturated NH4Cl crystals respectively are reported. They give some information about the kind and properties of the point defects. They further show that the formation of defects depends even in the intrinsic range on the quantity of H2O adsorbed on the samples and that thedc andac conductivity are different at lower temperatures. These effects are to be attributed to the properties of the complex cation and to the special charge transport mechanism realized by a sequence of vacancy and proton jumps.