Fabrication and characterization of potassium-sodium niobate piezoelectric ceramics by spark-plasma-sintering method |
| |
Authors: | Ruiping Wang Tadashi Sekiya Yoshiro Shimojo |
| |
Affiliation: | Smart Structure Research Center, National Institute of Advanced Industrial Science and Technology, Umezono 1-1-1, Tsukuba, Ibaraki 305-8564, Japan |
| |
Abstract: | High density (Na1−xKx)NbO3 (x = 0.5, 0.6, and 0.7) ceramics were successfully prepared by spark-plasma-sintering (SPS) method. The dielectric and piezoelectric properties of the SPS samples were investigated and compared to that of hot-pressed samples. It is found that, the SPS-sintered (Na1−xKx)NbO3 samples show higher room temperature dielectric constant, higher coercive fields, lower remnant polarizations and lower electromechanical coefficients than that of the hot-pressed (Na1−xKx)NbO3 samples. The dielectric and piezoelectric property differences between the SPS-sintered and hot-pressed samples have been attributed to grain size effects. |
| |
Keywords: | A Ceramics A Electronic material A Oxides D Ferroelectricity D Piezoelectricity |
本文献已被 ScienceDirect 等数据库收录! |
|