Structural and Dielectric Properties of <TEX>$(1-x)Pb(Fe_{1/2}Nb_{1/2})O_3-xPbTiO_3$</TEX> Prepared by Precalcination Method

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J. Korean Ceram. Soc. > Volume 30(11); 1993 > Article

Journal of the Korean Ceramic Society 1993;30(11): 891.

전하소법으로 합성한 $(1-x)Pb(Fe_{1/2}Nb_{1/2})O_3-xPbTiO_3$의 구조와 유전성질에 대한 연구

홍영식, 박휴범, 김정¹, 김건, 김시중

고려대학교 이과대학 화학과
¹서남대학교 화학과

Structural and Dielectric Properties of $(1-x)Pb(Fe_{1/2}Nb_{1/2})O_3-xPbTiO_3$ Prepared by Precalcination Method

ABSTRACT

Pb(Fe1/2Nb1/2)O3 and (1-x)Pb(Fe1/2Nb1/2)O3-xPbTiO3 ceramics were prepared by the precalcination method. Their structural and dielectric properties were investigated. The amount of perovsikte phase was increased by the precalcination and the dielectric properties of ceramics were improved. Additions of PbTiO3 were found to increase the tetragonality (c/a) of crystal lattice and Tc. In the middle region of (1-x)Pb(Fe1/2Nb1/2)O3-xPbTiO3, duffuse phase transitions (DPT) were observed.