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Dielectric and piezoelectric properties of Bi2O3 added (Pb,Ca,Sr)(Ti,Mn,Sb)O3 ceramics sintered at low temperature

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4 Author(s)
Kim, Dohyung ; Department of Electrical Engineering, Semyung University, Jechon, Chungbuk 390-711, Republic of Korea ; Yoo, Juhyun ; Insung Kim ; Jaesung Song

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In this study, in order to develop low temperature sintering ceramics for a thickness mode multilayer piezoelectric transformer, (Pb,Ca,Sr)(Ti,Mn,Sb)O3 ceramics were fabricated using Na2CO3, Li2CO3, MnO2, and Bi2O3 as sintering aids at 870, 900, and 930 °C. Their respective dielectric and piezoelectric properties were investigated according to the amount of Bi2O3 addition. At the sintering temperature of 900 °C, the optimum value was shown for the density of 6.94 g/cm3, thickness vibration mode electromechanical coupling factor (henceforth, kt) of 0.497, thickness vibration mode mechanical quality factor (henceforth, Qmt) of 3162, and dielectric constant (henceforth, εr) of 209 for thickness mode multilayer piezoelectric transformer application.

Published in:

Journal of Applied Physics  (Volume:105 ,  Issue: 6 )

Date of Publication:

Mar 2009

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