Sol-Gel Processing and Novel Physical Properties of PLZT 7/57/43 Ferroelectric Ceramics
The sol-gel process was employed to prepare (Pb1-xLax)(Zrl-yTiy)O3 (PLZT) ceramics with nominal composition Pb0.93La0.07(Zr0.57Ti0.43)0.9825O3.The structure and physical properties such as dielectric, piezoelectric and ferroelectric properties were investigated.X-ray diffraction results showed that the perovskite phase PLZT was formed when the sol-gel processed powders was calcined at 600℃for 4 hours.Nano-crystalline particles with a size of ~50nm were found.TG-DTA studies were used to analyze the thermal properties of nano-powders for understanding the reaction kinetics in them.Wafered bulk ceramic samples prepared from the sol-gel derived powders were subjected to electrical measurements, in order to determine the dielectric, piezoelectric and ferroelectric properties.The dielectric properties of the PLZT-BST system are further improved and the dielectric piezoelectric properties of PLZT ceramics are found to be sensitive to the particle size of PLZT nanopowders.The dielectric piezoelectric properties of polarized PLZT ceramics can be improved with the lessening of PLZT nanopowder size.Meanwhile, the grain size of PLZT ceramics decreases.
Sol-gel Nnanopowder PLZT Ferroelectric Piezoelectric Dielectric
Ke-yu Zheng Ya-Li Ding Ren-Zhi Shao
Ministry of education key laboratory for the green preparation and application of functional materia School of Materials Science & Engineering, Hubei University, Wuhan 430062, China Institute of Physics and Information Science, Hunan Normal University, Changsha 420082, China
国际会议
The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)
哈尔滨
英文
292-297
2013-08-23（万方平台首次上网日期，不代表论文的发表时间）