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Effect of oxide dopants on the structure and electrical properties of (Na0.5K0.5)NbO3-LiSbO3 lead-free piezoelectric ceramics
- Source :
-
Physica B . Apr2010, Vol. 405 Issue 7, p1918-1921. 4p. - Publication Year :
- 2010
-
Abstract
- Abstract: The alkaline niobate-based perovskite ceramics (K,Na,Li)(Nb,Sb)O3 has been regarded as a new candidate of lead-free piezoelectric materials due to its excellent piezoelectric properties. In this study, 0.948(Na0.5K0.5)NbO3-0.052LiSbO3 (KNN-LS) based ceramics were prepared by a conventional solid-state reaction method. The effects of ZnO, CuO and MnO2 on the structure, dielectric and piezoelectric properties of KNN-LS were investigated in this study. When 1mol% oxide dopants were added, respectively, KNN-LS piezoelectric ceramics became “hard”. Mechanical quality factor Q value increased significantly with unobvious change of d 33 (93–119pC/N). KNN-LS ceramics kept high Curie temperature Tc around 350°C. Dielectric loss at 1KHz decreased a lot to below 5%. The results show that the oxide-doped KNN-LS ceramics are promising lead-free piezoelectric materials for electromechanical transducer applications. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09214526
- Volume :
- 405
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Physica B
- Publication Type :
- Academic Journal
- Accession number :
- 48375525
- Full Text :
- https://doi.org/10.1016/j.physb.2010.01.074