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J. Korean Ceram. Soc. > Volume 24(5); 1987 > Article
Journal of the Korean Ceramic Society 1987;24(5): 470.
압전세라믹의 필터 특성에 미치는 Kp2QM의 영향 Pb(Mg1/3N2/3)O3-PbTiO3-PbZrO3
김광일, 조상희1
1경북대학교 재료공학과
Effects of KP, QM on Filter Characteristics of Pb(Mg1/3N2/3)O3-PbTiO3-PbZrO3 Ceramics
The system of 0.1Pb(Mg1/3N2/3)O3-yPbTiO3-zPbZrO3 piezoelectric ceramics was made in the radial model disk and ring dot type filter. The resonant frequency(fr) variations were investigated for 100 hours and the temperature range from 20$^{circ}C$ to 100$^{circ}C$. As the results, the morphotropic phase boundary was supposed to be the composition of 45 y 50 and 40 z 45. The best characteristic of againg effect, after 10-hours, was composed of y, z=45. The stabilized characteristic of temperature varition, to become 0.1% up to 100$^{circ}C$, was composed of y=50 and z=40. The bandwidth was broadened with increasing the electromechanical coefficient(kp), and the filter characteristics was approached ideal mode with increasing mechanical quality factor(Qm). Kp and Qm affected combinationally on filter characteristics.
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