Dielectric and Piezoelectric Properties of 0.95(K 0.5 Na 0.5 )NbO 3 -0.05Li(Sb 0.8 Nb 0.2 )O 3 Ceramics according to the Amount of CuO Addition

2009

In this study, In order to improve dielectric and piezoelectric properties of Lead-free piezoelectric ceramics, were investigated as a function of the amount of CuO addition. With increasing the amount of CuO addition, density was increased up to 0.4 wt.% CuO and then decreased above. And also, electro mechanical coupling factor () was decreased. At the 0.4 wt% CuO added specimen sintered at , , Qm, density, dielectric constant () and [pC/N] showed the optimal value of , 0.354, 305, 645, and 144 pC/N respectively.

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