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Relaxor Behaviour and Ferroelectric Properties of (Li0.12Na0.88)(Nb0.9-xTa0.10Sbx)O3 Lead-Free Ceramics |
| WANG Ying1,2;LI Yong-Xiang1;YI Zhi-Guo1,2;WANG Dong1;YIN Qing-Rui1 |
| 1The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
2Graduate School of Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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WANG Ying, LI Yong-Xiang, YI Zhi-Guo et al 2006 Chin. Phys. Lett. 23 2232-2235 |
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Abstract New lead-free ceramics (Li0.12Na0.88)(Nb0.9-xTa0.10Sbx)O3 (0.01×0.06) are synthesized by solid-state reaction method. The dielectric, piezoelectric and ferroelectric properties of the ceramics are studied. The dielectric constant dependence with temperature and frequency of the ceramic specimen with x=0.04 shows typical characteristics of relaxor ferroelectrics, and the Vogel--Fulcher relationship is fulfilled. The dielectric behaviour and its relation to the phase transition phenomena are discussed. The polarization hysteresis loops at room temperature are also measured.
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| Keywords:
77.22.Gm
77.84.Dy
77.22.-d
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Published: 01 August 2006
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