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Microstructural and piezoelectric properties of low temperature sintering PMN-PZT ceramics with the amount of Li2CO3 addition |
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| Authors: | Juhyun Yoo Changbae Lee Yeongho Jeong Kwanghyun Chung Duckchool Lee and Dongsoo Paik |
| Affiliation: | aDepartment of Electrical Engineering, Semyung University, Jechon, Chungbuk 390-711, Korea bKorea Electric Power Research Institute, Yusung-Gu, Taejon 305-380, Korea cDepartment of Electrical Engineering, Inha University, Incheon 402-751, Korea dE2S Technologies Co. Ltd., KITI, Suwon University, Hwaseung, Gyeonggi 445-743, Korea |
| Abstract: | PMN-PZT ceramics doped with Li2CO3 and Bi2O3 as sintering aids were manufactured in order to develop the low temperature sintering ceramics for multilayer piezoelectric transformer, and their micro structural, dielectric and piezoelectric properties were investigated. The sintering aids were proved to lower the sintering temperature of doped PMN-PZT ceramics due to the effect of LiBiO2 liquid phase. Optimal values for multilayer piezoelectric transformer application, such as electromechanical coupling factor (kp) of 0.50, mechanical quality factor (Qm) of 2264, and dielectric constant (K) of 1216, and curie temperature (Tc) of 317 °C were found at 0.1 wt.% Li2CO3 added ceramics sintered at 940 °C. |
| Keywords: | Low temperature sintering ceramics Dielectric properties Electromechanical coupling factor (kp) Mechanical quality factor (Qm) Sintering aids |
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