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

Abstract

Abstract 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-1cm-1, while the hole conductivity is about seven orders of magnitude lower at the silver activity aAg =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