Effect of Bi2O3/Li2CO3 on Low Temperature Sintering and Dielectrics of BaTiO3 Ceramics

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J. Korean Ceram. Soc. > Volume 26(6); 1989 > Article

Journal of the Korean Ceramic Society 1989;26(6): 843.

BaTiO3 저온 소결 및 유전상에 미치는 Bi2O3/Li2CO3의 영향

윤기현, 신현민, 강동헌

연세대학교 공과대학 요업공학과

Effect of Bi2O3/Li2CO3 on Low Temperature Sintering and Dielectrics of BaTiO3 Ceramics

ABSTRACT

Effect of Bi2O3/Li2CO3 on low temperature sinteirng and dielectric property of BaTiO3 ceramics has been investigated. For the specimen sintered at 110$0^{circ}C$, it was densified to 96% of BaTiO3 theoretical density by the addition of 1.0-1.25w/o Bi2O3/Li2CO3. Maximum dielectric constant increased and Curie temperature lowered with the increase of Bi2O3/Li2CO3 content, which probably can be explained by thne substitution of Bi3+, Li1+ on BaTiO3 lattice. The volatilization of Li1+, resulting from the increase of soaking time at 110$0^{circ}C$ leads to the increase of Curie temperature and tetragonality of the specimen.