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Journal of the Korean Ceramic Society 1992;29(4): 259. |
| ($Ba_{1-$chi$}Pb_$chi$$)TiO3 세라믹의 구조와 전기적 특성 |
| 김시중, 김건, 박열범, 안병준 |
| 고려대학교 이과대학 화학과 |
| Structure and Electric Properties of (Ba1-$chi$Pb$chi$)TiO3 Ceramics |
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| ABSTRACT |
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The crystal structures and the bonding characteristics in (Ba$chi$Pb1-$chi$)TiO3 have been investigated by X-ray diffraction analysis and infrared spectrophotometry. As Ba2+ ion in BaTiO3 were substituted by Pb2+ ion, the structures were changed to orthorhombic from tetragonal, and also the covalent character in Ti-O bond increased, and then the dielectric constants decreased gradually. In the mixed oxide containing Pb2+ ion more than 50%, the change-transfer energy of titanium ion increased. |
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