Ba_2In_2O_5系酸化物の合成と導電性

概要

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rights: 社団法人日本セラミックス協会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: isVersionOf: http://ci.nii.ac.jp/naid/110002290515/Sintered bodies of (Ba, Pb)_2In_2O_5 were prepared by substituting A site of Ba_2In_2O_5 having a brownmillerite related structure with Pb. Crystal structure and conductivity of sintered (Ba, Pb)_2In_2O_5 were investigated. The crystal structure of (Ba, Pb)_2In_2O_5 was governed by the Pb content, and changed from orthorhombic to cubic structure with an increase in Pb content. The temperature dependence of the conductivi ty of (Ba, Pb)_2In_2O_5 revealed that the order disorder transition of oxygen vacancy disappears with an increase in Pb content, and that oxygen vacancies are disordered even at room temperature to have cubic structure. (Ba_<0.80>Pb_<0.09>)_2In_2O_5 showed higher conductivity than Ba_2In_2O_5 m the temperature range of 673 to 1100 K. The results suggest that the changes in crystal structure and conductivity are due to the ionic polarization of Pb.
社団法人日本セラミックス協会の論文
1994-12-01