Abstract
The effect of (Li,Ce) substitution for A-site on the properties of [(Na <sub>0.52</sub>K <sub>0.42</sub>Li <sub>0.06</sub>)Bi] <sub>0.5</sub>Bi <sub>2</sub> (Nb <sub>1.88</sub>Sb <sub>0.06</sub>Ta <sub>0.06</sub>)O <sub>9</sub>-based ceramics was investigated. The piezoelectric activity of [(Na <sub>0.52</sub>K <sub>0.42</sub>Li <sub>0.06</sub>)Bi] <sub>0.5</sub>Bi <sub>2</sub> (Nb <sub>1.88</sub>Sb <sub>0.06</sub>Ta <sub>0.06</sub>)O <sub>9</sub>-based ceramics is significantly improved by the modification of lithium and cerium. The Curie temperature (TC) gradually decreases from 625 to 605 °C with increasing the (Li,Ce) modification. The piezoelectric coefficient d <sub>33</sub> of the [(Na <sub>0.52</sub>K <sub>0.42</sub>Li <sub>0.06</sub>)Bi] <sub>0.44</sub>(Li,-Ce) <sub>0.03</sub>[] <sub>0.03</sub>Bi <sub>2</sub>(Nb <sub>1.88</sub>Sb <sub>0.06</sub>Ta <sub>0.06</sub>)O <sub>9</sub> ceramic was found to be 28 pC/N, the highest value among the [(Na <sub>0.52</sub>K <sub>0.42</sub>Li <sub>0.06</sub>)-Bi] <sub>0.5</sub>Bi <sub>2</sub>(Nb <sub>1.88</sub>Sb <sub>0.06</sub>Ta <sub>0.06</sub>)O <sub>9</sub>-based ceramics, also almost 50% higher than the reported d <sub>33</sub> values of other Bismuth layerstructured ferroelectric (BLSF) systems (∼5-19 pC/N). The planar coupling factor k <sub>p</sub> and k <sub>t</sub> were found to be 7.0 and 28.0%, together with the high TC (∼610 8C) and stable piezoelectric properties, demonstrating that the (Li,Ce) modified [(Na <sub>0.52</sub>K <sub>0.42</sub> Li <sub>0.06</sub>)Bi] <sub>0.5</sub>Bi <sub>2</sub>(Nb <sub>1.88</sub>Sb <sub>0.06</sub>Ta <sub>0.06</sub>)O <sub>9</sub>-based material a promising candidate for high temperature applications. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
| Original language | English |
|---|---|
| Pages (from-to) | 1792-1795 |
| Journal | Physica Status Solidi (A) Applications and Materials Science |
| Volume | 207 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2010 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.Funding
This research was supported by the Outstanding Youth Scientist Research Foundation of Shandong Province of China under grant No. 2008BS04002 and No. BS2009CL034, the Specialized Research Fund for the Doctoral Program of Higher Education of China under grant nos. 20070422059 and 20090131120014, and the Natural Science Foundation of Shandong Province under Grant No. ZR2009AM022.
Research Keywords
- Ceramics
- Dielectric properties
- Piezoelectric constant
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