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Microstructure and electrical properties of PLZT ceramics from Pb3O4 as the lead source
Authors:Jihua Zhang  Shangjun MoHuayi Wang  Shanxue ZhenHongwei Chen  Chuanren Yang
Affiliation:State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Abstract:In this paper, Pb3O4, rather than conventional PbO, was introduced in the solid phase synthesis of (Pb0.92La0.08)(Zr0.35Ti0.65)0.98O3 (PLZT) ceramics. The microstructure and electrical properties of the PLZT ceramics were investigated. Results showed that due to the activity of Pb3O4, pyrochlore phase PLZT was depressed effectively. The PLZT ceramics with 5.0 wt.% excess Pb3O4 in the original materials had a well-crystallized pure perovskite structure when being sintered at 1100 °C for 6 h. In addition, the amount of Pb3O4 had an influence on the electrical properties of the PLZT ceramics. Residual polarization as high as 36.9 μC/cm2 was obtained from the samples with 5.0 wt.% excess Pb3O4.
Keywords:Lead lanthanum zirconate titanate (PLZT)  Ceramics  Perovskite  Ferroelectric  Pb3O4
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