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http://dx.doi.org/10.4313/JKEM.2007.20.9.771

Dielectric and Piezoelectric Characteristics of Low Temperature Sintering PbTiO3 System Ceramics with amount of Bi2O3 Addition  

Yoo, Ju-Hyun (세명대학교 전기공학과)
Kim, Do-Hyung (세명대학교 전기공학과)
Lee, Sang-Ho (세명대학교 전기공학과)
Sohn, Eun-Young (한국폴리텍2 인천대학 메카트로닉스과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.9, 2007 , pp. 771-775 More about this Journal
Abstract
In this study, in order to develop low temperature sintering ceramics for thickness vibration mode multilayer piezoelectric transformer, $PbTiO_3$ system ceramics were fabricated using $Na_2CO_3,\;Li_2CO_3,\;MnO_2\;and\;Bi_2O_3$ as sintering aids and their dielectric and piezoeletric properties were investigated according to the amount of $Bi_2O_3$ addition. At the sintering temperature of $900^{\circ}C\;and\;Bi_2O_3$ addition of 0.1 wt%, density, grain size, thickness vibration mode eletromechanical coupling factor($k_t$), thickness vibration mode mechanical quality factor($Q_{mt}$) and dielecteic constant(${\varepsilon}_r$) showed the optimum value of $6.94g/cm^3,\;2.413{\mu}m$, 0.497, 3,162 and 209, respectively, for thickness vibration mode multilayer piezoelectric transformer application.
Keywords
Low temperature sintering; $PbTiO_3$; Multilayer transformer; Thickness vibration mode electromechanical coupling factor($k_t$); Thickness vibration mode mechanical quality factor($Q_{mt}$);
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