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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 |
산업과학기술연구원 1경북대학교 재료공학과 |
Effects of KP, QM on Filter Characteristics of Pb(Mg1/3N2/3)O3-PbTiO3-PbZrO3 Ceramics |
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ABSTRACT |
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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