Dielectric and Piezoelectric Characteristics of $(Pb,Ca,Sr)Ti(Mn,Sb)O_3$ Ceramics with the amount of $Bi_2O_3$ addition

$Bi_2O_3$ 첨가량에 따른 $(Pb,Ca,Sr)Ti(Mn,Sb)O_3$ 세라믹스의 유전 및 압전특성

  • Published : 2007.06.21

Abstract

In the study, in order to develop low temperature sintering ceramics for multilayer piezoelectric transformer, $(Pb,Ca,Sr)Ti(Mn,Sb)O_3$ ceramics were fabricated using $Na_2CO_3$, $Li_2CO_3$, $MnO_2$ and $Bi_2O_3$ as sintering aids and their dielectric and piezoelectric properties were investigated according to the amount of $Bi_2O_3$ addition. At the sintering temperature of $900^{\circ}C$, density, thickness vibration mode electromechanical coupling factor ($k_t$), thickness vibration mode mechanical quality factor ($Q_{mt}$) and dielecteic constant (${\varepsilon}_r$) showed the optimum value of $6.94[g/cm^3]$, 0.497, 3,162 and 209, respectively, for multilayer piezoelectric transformer application.

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