Piezoelectric and dielectric properties of Pb_0.93La_0.02Sr_0.05(Zr_0.52Ti_0.48)O₃ ceramics doped with Li₂CO₃ at low sintering temperature

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• 作者：Maliha Siddiqui^a ; Julie Juliewatty Mohamed^b ; Zainal Arifin Ahmad^a ; ^{srzainal@usm.my}
• 关键词：D. PZT ; C. Piezoelectric properties ; C. Dielectric properties ; D. Perovskites
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：43
• 期：2
• 页码：2644-2649
• 全文大小：1389 K
• 卷排序：43

文摘

Pb0.93La0.02Sr0.05(Zr0.52Ti0.48)O3 (PLSZT) ceramics were successfully doped with various amounts of Li2CO3. The effect of Li2CO3 as sintering aid on crystallization process of PLSZT ceramic was also determined by thermal analysis (TGA/DTA). As the amount of Li2CO3 increased from 0.1 to 1 mol%, the sintering temperature was found to decrease from 1150 to 850 °C. Li2CO3 addition improved the densification and increased the average grain size. XRD data revealed the formation of single perovskite phase in all compositions. The effects of Li+ doping on the piezoelectric and dielectric properties of PLSZT ceramics were also investigated in which the piezoelectric and dielectric properties were found to be enhanced with the increase in Li+ content. The best piezoelectric and dielectric properties were obtained for 0.7 mol% Li2CO3 with ρ=7.421 g/cm3, KP=0.46, d33=259 (pC/N), εr=1270, and tan δ=0.0847.