Initial Particle Size Effects on Sintering and Dielectric Properties of <TEX>$Pb>(Fe_1/2Nb_1/2)O_3$</TEX>

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J. Korean Ceram. Soc. > Volume 29(9); 1992 > Article

Journal of the Korean Ceramic Society 1992;29(9): 711.

초기입자크기가 $Pb>(Fe_1/2Nb_1/2)O_3$의 소결 및 유전성에 미치는 영향

박경봉, 김태희, 윤기현¹

안동대학교 재료공학과
¹연세대학교 세라믹공학과

Initial Particle Size Effects on Sintering and Dielectric Properties of $Pb>(Fe_1/2Nb_1/2)O_3$

ABSTRACT

Pb(Fe1/2Nb1/2)O3 was prepared by the molten salt synthesis method using an equimolar mixture of NaCl-KCl. Initial particle size could be controlled by varying the weight ratio of the NaCl-KCl to raw materials from 0.1 to 1.0, and the initial particle size effects on the sintering and dielectric properties of Pb(Fe1/2Nb1/2)O3 were investigated at the sintering temperature range from 90$0^{circ}C$ to 105$0^{circ}C$. As the weight ratio of salt increased, the average particle size decreased and the particle size distributions tended to narrow. As the initial particle size decreased, the linear shrinkage and density increased due to the promotion of densification. Dielectric constant increased with decreasing the initial particle size resulting from the increase of density and grain size.