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http://dx.doi.org/10.4313/JKEM.2007.20.12.1034

Piezoelectric and Dielectric Properties of PZW-PMN-PZT Piezoelectric Ceramic according to Sintering Aid Li2CO3 Addition  

Lee, Kab-Soo (세명대학교 전기공학과)
Lee, Il-Ha (세명대학교 전기공학과)
Yoo, Ju-Hyun (세명대학교 전기공학과)
Ryu, Sung-Lim (충주대학교 신소재공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.12, 2007 , pp. 1034-1038 More about this Journal
Abstract
In order to develop the composition ceramics capable of being sintered at low temperature with high piezoelectric properties for multilayer piezoelectric actuator application, PZW-PMN-PZT system ceramics were manufactured according to sintering aid $Li_2CO_3$ addition and their microstructural, dielectric and piezoelectric properties were investigated. The crystal structure of the specimens showed a perovskite phase and no pyrochlore or other second phase was detected. At the sintering temperature of $900\;^{\circ}C,\;0.2\;wt%Li_2CO_3$ added specimen showed a optimum values of kp = 0.562, $d_{33}\;=\;360\;pC/N$ and Qm = 1184, respectively.
Keywords
Sintering aids; Electromechanical coupling factor(kp); Mechanical quality factor(Qm); MLCA(Multilayer ceramic actuator);
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