Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Piezoelectric and Dielectric Properties of Low Temperature Sintering Pb(Zn1/2W1/2)O3-Pb(Mn1/2Nb2/3)O3-Pb(Zr0.48Ti0.52)O3 Ceramics Manufactured by Post-annealing Method

Post-annealing 방법으로 제작된 저온소결 Pb(Zn1/2W1/2)O3-Pb(Mn1/2Nb2/3)O3-Pb(Zr0.48Ti0.52)O3 세라믹의 압전 및 유전특성

  • Published : 2008.03.01
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Abstract

In this study, in order to improve the electrical properties of low temperature sintering piezoelectric ceramics, $[0.05Pb(Zn_{1/2}W_{1/2})-0.07Pb(Mn_{1/3}Nb_{2/3})-0.088Pb(Zr_{0.48}Ti_{0.52})]O_3$(abbreviated as PZW-PMN-PZT) ceramic systems were fabricated using $Bi_2O_3$, CuO and $Li_2CO_3$ as sintering aids and then their piezoelectric and dielectric properties were investigated according to the amount of $Li_2CO_3$ and post-annealing process. Post-annealing process enhanced all physical properties except for mechanical quality factor (Qm). 0.2 wt% $Li_2CO_3$ added and post-annealed specimen showed the excellent values suitable for low loss piezoelectric actuator application as follow: the density = 7.86 $g/cm^3$ electromechanical coupling factor (kp) = 0.575, piezoelectric constant $d_{33}$ = 370 pC/N, dielectric constant ($\varepsilon_r$) = 1546, and mechanical quality factor (Qm) = 1161, respectively.

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References

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