Study of copper ion superionic solids in the system (1-x)CuI:xCdI2
Abstract
Electric transport studies conducted on five compounds of the system (1-x)CuI:xCdI2 (x = 0, 0.25, 0.33, 0.50, and 0.75) show that these compounds undergo phase transitions from the low-temperature, low-conductivity beta phase to the high-temperature, high-conductivity alpha phase. The phase transition temperature decreases as x increases (e.g., 642 K for x = 0 and 488 K for x = 0.75). Above the transition temperature, all the compounds are typical superionic solids, the Cu(+) ion being the main charge carrier. The mechanisms of electric transport in the superionic solids are examined. The activation energies, heats of transport, and energies of formation of defects are estimated from experimental conductivity and thermoelectric power data.
- Publication:
-
Journal of Materials Science
- Pub Date:
- January 1984
- DOI:
- 10.1007/BF02403139
- Bibcode:
- 1984JMatS..19..303L
- Keywords:
-
- Cadmium Compounds;
- Charge Carriers;
- Copper Compounds;
- Electrical Resistivity;
- Iodides;
- Solid Electrolytes;
- Enthalpy;
- Grain Boundaries;
- Heat Of Formation;
- Ion Currents;
- Pellets;
- Thermoelectricity;
- Solid-State Physics