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BaO 과잉량에 따른 BaTiO<sub>3</sub>의 전기전도도
여홍구,국민호,김명호,송태권,배동식,박태곤,이순일,Yeo, Hong-Goo,Kuk, Min-Ho,Kim, Myong-Ho,Song, Tae-Kwon,Bae, Dong-Sik,Park, Tne-Gone,Lee, Soon-Il,Randall, Clive A. 한국세라믹학회 2005 한국세라믹학회지 Vol.42 No.5
In this study the electrical conductivity of excess BaO in $BaTiO_3$ was measured to investigate the relationship between defects and solubility in the temperature range of $900^{\circ}C$ to $1300^{\circ}C$ under various oxygen partial pressure. First of all, quenched $BaTiO_3$ powders of various Ba/Ti ratios were analysed by X-ray diffraction to confirm whether second phase is formed or not. As the results, we observed the solubility of BaO in the temperature range of $1200^{\circ}C$ to $1400^{\circ}C$, and it was also found that the conductivity minima move to lower $PO_2$ with increasing excess BaO within solubility limit.