Electronic conductivity of La_0.9Sr_0.1InO_3-δ

DC polarization measurements using ion-blocking electrode were applied to La_0.9Sr_0.1InO_3-δ as functions of temperature and oxygen partial pressure in order to determine the electronic conductivity. A new model was proposed to interpret the Hebb-Wagner polarization curves for ion blocking measurements. The electron and hole conductivity has been obtained respectively. Between 600 and 800°C at oxygen partial pressures of 1 to 0.05atm the electronic conductivities are found to be: and