Investigation of the Electrical Properties in Indium and Yttrium-Doped Barium
Zirconate Based Proton Conducting Perovskites
Young-Sung Lee, Yasuhiro Takamura, Yi-Hsuan Lee, Kwati Leonard and Hiroshige Matsumoto
The inuences of In- and Y-doping on the electrical conduction properties of barium zirconate were investigated. The electrical conductivity measured on of BaZr1−x−yInxYyO3−δ (x= 0, 0.1, 0.2 and y= 0, 0.1, 0.2) could be understood that yttrium doping causes high bulk conductivity and indium doping leads to lowering activation energy of the grain boundary. Co-doping of yttrium and indium promotes the enhancement effect of improving the bulk conductivity and lowering of activation energy, and it is thus expected that the co-doping with yttrium and indium can work for controlling the bulk and grain boundary conduction specically in the materials.