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http://dx.doi.org/10.4313/JKEM.2017.30.8.496

Microstructure and Piezoelectric Properties of PMN-PNN-PZT Ceramics  

Yoo, Ju-Hyun (Department of Electrical Engineering, Semyung University)
Kim, Seung-Won (Department of Electrical Engineering, Semyung University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.30, no.8, 2017 , pp. 496-500 More about this Journal
Abstract
$Pb(Mn_{1/3}Nb_{2/3})_{0.07}(Ni_{1/3}Nb_{2/3})_{0.10}(Zr_{0.5}Ti_{0.5})_{0.83}O_3$ composition ceramics with high piezoelectric properties were fabricated by the columbite precursor method for ultrasonic generators, and the effects of sintering temperature on microstructure and piezoelectric properties were systematically investigated. It was found that the tetragonality of the ceramics decreased with increase in sintering temperature. Moreover, excellent physical properties such as $d_{33}=447pC/N$, ${\varepsilon}_r=1,843$, $k_p=0.641$, and $Q_m=1,207$ were obtained for an ultrasonic generator when the second calcination temperature and sintering temperature were $720^{\circ}C$ and $920^{\circ}C$, respectively.
Keywords
Ultrasonic generator; Ceramic; PMN-PNN-PZT; Microstructure; Piezoelectric properties;
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