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http://dx.doi.org/10.4313/JKEM.2010.23.5.379

Piezoelectric Properties of (Na,K)NbO3 Ceramics as a Function of K5.4Cu1.3Ta10O29 Addition  

Noh, Jung-Rae (Department of Electrical Engineering, Semyung University)
Yoo, Ju-Hyun (Department of Electrical Engineering, Semyung University)
Jeong, Yeong-Ho (Department of Electrical Engineering, Chungju National University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.23, no.5, 2010 , pp. 379-382 More about this Journal
Abstract
In this study, in order to develop the lead-free piezoelectric ceramics with high piezoelectric and dielectric properties, $(K_{0.5}Na_{0.5})(Nb_{0.97}Sb_{0.03})O_3$ ceramics were fabricated using a conventional mixed oxide process and their piezoelectric and dielectric characteristics were investigated according to the $K_{5.4}Cu_{1.3}Ta_{10}O_{29}$ addition. $K_{5.4}Cu_{1.3}Ta_{10}O_{29}$ addition enhanced density, electromechanical coupling factor($k_p$) piezoelectric constant $d_{33}$ and mechanical quality factor($Q_m$). At the 0.9 mol% $K_{5.4}Cu_{1.3}Ta_{10}O_{29}$ addition, density, electromechanical coupling factor($k_p$), dielectric constant(${\varepsilon}_r$) and piezoelectric constant($d_{33}$) of specimen showed the optimum values of 0.46, 471, and 148 pC/N, respectively.
Keywords
Lead-free piezoelectric ceramics; Electromechanical coupling factor; Piezoelectric constant;
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Times Cited By KSCI : 1  (Citation Analysis)
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