Dielectric and Piezoelectric Properties of Pb(Ni1/3Nb2/3)O3-PbTiO3-PbZrO3 Solid Solution Ceramics

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J. Korean Ceram. Soc. > Volume 25(5); 1988 > Article

Journal of the Korean Ceramic Society 1988;25(5): 523.

3-PbZrO3계의 유전 및 압전특성

손정호, 남효덕¹, 조상희²

한국과학기술원 무기재료연구실
¹경북대학교 전자공학과
²경북대학교 재료공학과

Dielectric and Piezoelectric Properties of Pb(Ni1/3Nb2/3)O3-PbTiO3-PbZrO3 Solid Solution Ceramics

ABSTRACT

The dielectric and piezoelectric properties with compositions in Pb(Ni1/3Nb2/3)O3-PbTiO3-PbZrO3-(PNN-PT-PZ)solid solution ceramics were investigated. In this study, the compsition ranges were 30 PNN 45mole%, 20 PT 50mole% and 50 PZ5mole%. As PT fraction were increased the grain size was increased and the fired density was decreased, but the changes of PNN fraction had no effect on the grain size. The Curie temperature was increased when PT and PNN fraction were increased. The displacement was increased but had a great hysteresis loss when PT fraction was increased. In morphotropic phase boundary, the maximum piezoelectric and electromechanical coupling factor were indicated. Morphotropic phase boundary(MPB) was 34 PT 36mole% in chang of compositions.