소결체 및 전극의 크기와 조성이 $Pb(Mn_{1/3}Nb_{2/3})O_3 PbTiO_3-PbZrO_3$계 압전세라믹스의 공진특성에 미치는 영향

Effect of Composition Size of Sintered Body and Electrode on Resonant Characteristics of $Pb(Mn_{1/3}Nb_{2/3})O_3 PbTiO_3-PbZrO_3$ Piezoelectric Ceramics

  • 류영대 (경북대학교 대학원 전자공학과) ;
  • 조상희 (경북대하교 대학원 전자공학과)
  • 발행 : 1986.01.01

초록

The effect of composition size of sintered body and electrode on resonant characteristics of the system $Pb(Mn_{1/3}Nb_{2/3})O_3 PbTiO_3-PbZrO_3$ has been decribed. Composition ranged from X=40 to X=55 diameter of sintered body ranged from D=6.5 to D=12.5(mm) and diameter of electrode ranged from De=5.5 to De=11 (mm) In the composition of morphotropic phase boundary antiresonant frequency (fa) dcreased slowly whereas resonant frequency (fr) decreased rapidly on the ground of this Δf(fa-fr) and electromechanical coupling fractor Kp increased and Qm showed low value. On the contrary in toward the composition of tetragonal and rhombo-hedral fa increased slowly whereas fr increased rapidly on the ground of this Δf and Kp decreased and Qm increased abruptly. Substance of the above statements have no concern with size of sintered body and ele-ctrode. The other side as the size of electrode decreased Qm fr, fa and Δf increased. Cm and Co dominantly affect the resonant frequency and antiresonant frequency.

키워드

참고문헌

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