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 Characteristics of Low Temperature Sintering Pb(Mg1/2W1/2)O3-Pb(Mn1/3Nb2/3)O3-Pb(Zr1/2Ti1/2)O3 Ceramics With the Substitution of Pb(Mg1/2W1/2)O3

Pb(Mg1/2W1/2)O3 치환에 따른 저온소결 Pb(Mg1/2W1/2)O3-Pb(Mn1/3Nb2/3)O3-Pb(Zr1/2Ti1/2)O3 세라믹스의 압전 및 유전특성

  • Published : 2006.05.01
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Abstract

In this study, in order to develop low temperature sintering piezoelectric ceramics for LTCC (Low-Temperature Cofired Ceramic) multilayer piezoelectric actuator, PMW-PMN-PZT ceramics using $0.2wt%\; Li_2CO_3$ and $0.25wt%\;CaCO_3$ as sintering aids were investigated according to the varation of PMW substution. Composition ceramics could be sintered at $900^{\circ}C$ by adding sintering aids. As the amount of PMW substitution increased, the crystal structure of PMW-PMN-PZT ceramics moved from tetragonal phase to rhombohedral phase gradually, and MPB(Morphotrophic Phase Boundary) region appeared at 2 mol% PMW substitution. At the sintering temperature of $900^{\circ}C$, the density, electromechanical coupling factor(kp), mechanical quality factor(Qm), dielectric constant(${\epsilon}r$), piezoelectric constant(d33) and Curie temperature(Tc) of 2 mol% PMW substituted PMW-PMN-PZT ceramics showed the optimal values of $7.88g/cm^3$, 0.58, 1002, 1264, 352 pC/N and $336^{\circ}C$, respectively, for LTCC multilayer piezoelectric actuator application.

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References

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