DIELECTRIC-RELAXATION AND ANOMALOUS ELECTRIC-CONDUCTIVITY OF (NH2(CH3)(2))(2)COCL4 CRYSTALS

Dielectric and dilatometric investigations of (NH2(CH3)(2))(2)CoCl4 cr ystals were performed in the temperature range 290 to 430 It. Anomalie s characteristic of phase transitions have been found at the temperatu res 419, 380, 353, and 313 K (in a heating: run). In certain phases th e investigated crystal shows anomalously high protonic conductivity an d dielectric permittivity which strongly depend on the influence of ex trinsic water. The phenomenon clearly manifests itself by tile appeara nce of new features in Cole-Cole diagrams.