Dielectric and Piezoelectric Properties on Pb(<TEX>$Zn_{1/3}Nb_{2/3}}$</TEX>)<TEX>$O_3$</TEX>-Pb(<TEX>$Ni_{1/3}Nb{2/3}$</TEX>)<TEX>$O_3$</TEX>-PZT Ceramics

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J. Korean Ceram. Soc. > Volume 27(6); 1990 > Article

Journal of the Korean Ceramic Society 1990;27(6): 713.

Pb($Zn_{1/3}Nb_{2/3}}$)$O_3$-Pb($Ni_{1/3}Nb{2/3}$)$O_3$-PZT계 세라믹스의 유전 및 압전특성

정형진, 손정호, 윤상옥¹

한국과학기술연구원 무기재료실
¹강릉대학교 재료공학과

Dielectric and Piezoelectric Properties on Pb($Zn_{1/3}Nb_{2/3}}$)$O_3$-Pb($Ni_{1/3}Nb{2/3}$)$O_3$-PZT Ceramics

ABSTRACT

The effects of substituting Zn+2 for Ni+2 ion on dielectric and piezoelectric prooperties of Pb(Zn1/3Nb2/3)O3-Pb(Ni1/3Nb2/3)O3-PZT ceramics were investigated. With increasing Zn2+ contents the tetragonality was appreciably enhanced and the grain size decreased. Both Curie temperature and thermal stability were increased with increase in Zn2+ contents since the Zn+2 partial substition for Ni+2 could form solid solution in almost range of the composition investigated. Piezoelectric prooperties showed the maximum($varepsilon$ T/$varepsilon$0=5014, kp=0.56, d31=250$times$10-12m/V) in 4.5Pb(Zn1//3Nb2/3)O3-40.5Pb(Ni1/3Nb2/3)O3-55PZT composition sintered at 125$0^{circ}C$ and then decreased again due to the phase boundary movement for tetragonal phase of the solid solution of Zn2+ amount.