Abstract
We present the synthesis and characterization of ZrO2:x mol %In2O3 ceramics with x = 8, 10 and 12. Sintering has been achieved with spark plasma sintering which allows for higher densification (~ 97% of theoretical density). The powders were characterized by thermal analyses, scanning electron microscopy, x-ray diffraction. The electrical properties of the sintered samples were studied by electrochemical impedance spectroscopy as a function of dopant concentration x and temperature. The spark plasma sintering is effective to sinter the ZrO2-In2O3 nanoparticles, and sample with x = 8 were found to be pure ionic conductor at temperatures above ~ 300 °C.
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