Structure and Electric Properties of $(Ba_{1-x}Pb_x)TiO_3$ Ceramics

$(Ba_{1-x}Pb_x)TiO_3$ 세라믹의 구조와 전기적 특성

  • Kim, Si-Joong (Department of Chemistrt, Korea University) ;
  • Kim, Keon (Department of Chemistrt, Korea University) ;
  • Park, Hyu-Bum (Department of Chemistrt, Korea University) ;
  • Ahn, Byeung-Joon (Department of Chemistrt, Korea University)
  • 김시중 (고려대학교 이과대학 화학과) ;
  • 김건 (고려대학교 이과대학 화학과) ;
  • 박휴범 (고려대학교 이과대학 화학과) ;
  • 안병준 (고려대학교 이과대학 화학과)
  • Published : 1992.04.01

Abstract

The crystal structures and the bonding characteristics in $(Ba_xPb_{1-x})TiO_3$ have been investigated by X-ray diffraction analysis and infrared spectrophotometry. As $Ba^{2+}$ ion in $BaTiO_3$ were substituted by $Pb^{2+}$ 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 $Pb^{2+}$ ion more than 50%, the change-transfer energy of titanium ion increased.

Keywords

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