Study of (Na0.5K0.5)NbO3-LiNbO3 Ceramics Prepared by Laser Sintering

摘要：

The unique physical properties of the (1- x)K0.5Na0.5NbO3-xLiNbO3 (KNN-LN) ceramics prepared by laser sintering were studied by XRD and Raman scattering analysis. The larger substitution of Li+ leads to the composition x of the optimized piezoelectric properties (d33=65 ~ 105 pC/N and Tc= 400 ~ 440 ℃) is down to x=0.04 from 0.06. Textured structure due to strictly heating directivity of laser irradiation resulted in fine ferroelectric properties of remnant polarization and coercive field are 22.7 μC/cm2 and 16.1 kV/cm. The phase transition between tetragonal and orthorhombic phases (TO-T) shifting ~ 0℃ from room is beneficial for the increasing of temperature stability of the ceramics in application. It is shown that laser sintering should be one of promising methods in preparation of functional ceramics with applicable physical properties.

作者: Ji Lingfei Jiang Yijian Zhao Yan Liu Jie

作者单位: Institute of Laser Engineering,Beijing University of Technology,Beijing,100124,China

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 134-136

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）