Investigation of La9:33Si6O26 Oxygen Ionic Conductor
Investigation of La9.33Si6O26 Oxygen Ionic Conductor

La9.33Si6O26 Oxygen ionic conductor was synthesized by solid state reaction method. Its structure was determined by single-crystal X-ray diffraction analysis at room temperature. The results showed that La9.33Si6O26 oxide has the apatite structure with space group P63/m. AC impedance measurements indicated that the oxides sintered in nitrogen have much higher conductivity than those sintered in air. The effects of grain boundaries on the conductivity were discussed.