Study on Phase Structure and Electrical Properties of La-Doped (K0.5Na0.5)0.94Li0.06NbO3 Ceramics
Lead-free piezoceramics (K0.5Na0.5)0.943xLi0.06LaxNbO3 were synthesized by the conventional solid-state reaction process. The effect of La-doping on the phase structure and electrical properties of (K0.5Na0.5)0.94Li0.06NbO3 ceramics was investigated. X-ray diffraction analysis showed that the crystal structure of the ceramics changed from coexistence of orthorhombic and tetragonal phases to pseudo-cubic phase with the increase of La-doping level, and the change of phase structure seriously weakened the dielectric, ferroelectric and piezoelectric properties of the ceramics. In addition, it was found that the La-doping improved the density of the ceramics and the ceramics became dense. Meanwhile, the ceramics with La-doping displayed a relative lower loss tangent (tanδ) from room temperature to approximately 350℃.
KNN Piezoceramics Phase structure Electrical properties
Yong Liu Rui Qing Chu Zhi Jun Xu Qian Chen Lin Shao Kang An Guo Rong Li
College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China The State Key Lab of High Performance Ceramics and Superfinemicrostructure,Shanghai Institute of Cer
国际会议
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
广州
英文
1127-1130
2011-11-18(万方平台首次上网日期,不代表论文的发表时间)