Polarization Studies of the Electronic Minority Charge Carriers in Ag⁺ -ß"-Alumina

The partial electronic conductivity of Ag +- ß"-alumina was determined in the temperature range 180-200 °C, using Wagner's asymmetric galvanic polarization cell Ag| Ag + -ß"-alumina | Pt. The electron conductivity is 4.5 x 10 - 8 Ω -1 cm -1 , while the hole conductivity is about seven orders of magnitude lower at the silver activity a Ag =1at 200 °C. These results are compared with earlier data on ß/ß"-alumina. The conduction mechanism and the effect of the electronic conductivity on the application of Ag + -ß"-alumina are discussed