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http://dx.doi.org/10.5370/JEET.2009.4.4.527

Dielectric and Pyroelectric Properties of Dy-doped BSCT Thick Films by Screen-printing Method  

Noh, Hyun-Ji (Dept. of Ceramic Engineering, Eng. Res, Insti., i-cube Center, Gyeongsang National University)
Lee, Sung-Gap (Dept. of Ceramic Engineering, Eng. Res. Insti., i-cube Center, Gyeongsang National University)
Nam, Sung-Pill (Dept. of Ceramic Engineering, Eng. Res, Insti., i-cube Center, Gyeongsang National University)
Publication Information
Journal of Electrical Engineering and Technology / v.4, no.4, 2009 , pp. 527-530 More about this Journal
Abstract
$(Ba_{0.57}Sr_{0.33}Ca_{0.10})TiO_3$(=BSCT) powders, prepared by the sol-gel method, were doped using $MnCO_3$ as the acceptor and $Dy_2O_3$ as the donor. This powder was mixed with an organic vehicle. BSCT thick films were fabricated by the screen-printing techniques on the alumina substrate. The structural and dielectric properties of BSCT thick films were investigated with variation of the $Dy_2O_3$ amount. As a result of the differential thermal analysis (DTA), the exothermic peak was observed at around $670^{\circ}C$ due to the formation of the polycrystalline perovskite phase. All the BSCT thick films showed the XRD patterns of a typical polycrystalline perovskite structure. The average grain size of BSCT thick films decreased with an increasing amount of $Dy_2O_3$. The relative dielectric constant and dielectric loss of the BSCT thick film doped $Dy_2O_3$ 0.1mol% were 4637.4 and 1.6% at 1kHz, respectively.
Keywords
Ferroelectric; Dielectric constant; Thick film; Screen-printing;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 8
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