| Autor: |
Yong Liu, Qian Chen, Zhijun Xu, Kang An, Rui Qing Chu, Guorong Li, Lin Shao |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :1127-1130 |
| ISSN: |
1662-8985 |
| Popis: |
Lead-free piezoceramics (K0.5Na0.5)0.94-3xLi0.06LaxNbO3were synthesized by the conventional solid-state reaction process. The effect of La-doping on the phase structure and electrical properties of (K0.5Na0.5)0.94Li0.06NbO3ceramics 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°C. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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