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Simultaneous Enhancement of Piezoelectricity and Temperature Stability in (K,Na)NbO3-Based Lead-Free Piezoceramics by Incorporating Perovskite Zirconates
| Content Provider | Semantic Scholar |
|---|---|
| Author | Liu, Qing Zhang, Yichi Zhao, Lei Gao, Jing Zhou, Zhen Wang, Ke Zhang, Xiaowen Li, Longtu Li, Jing-Feng |
| Copyright Year | 2018 |
| Abstract | (K,Na)NbO3 is a leading lead-free piezoelectric system, but its thermal instability of high piezoelectricity is still one of its shortcomings compared to its lead-containing counterparts. This work found that incorporating perovskite compounds with Zr ions at the B-site can lead to the simultaneous enhancement of piezoelectricity and thermal stability. The piezoelectric coefficient d33 increased to ∼450 pC N−1, and such a high d33 value can be maintained within 10% change over a wide temperature range of 22–80 °C. The piezoelectric strain also reached 0.13% strain with a small variation (<10%) from room temperature to 130 °C. The intrinsic and extrinsic contributions to the piezoelectric effect were determined using a modified Rayleigh law as well as systematic analyses on the crystalline structure and electrical properties. A phenomenological interpretation is provided for the origin of the strong piezoelectricity and thermal stability in the diffused O–T phase transition. This study provides a new paradigm for the enhancement of electrical properties and thermal stability in lead-free piezoceramics. |
| Starting Page | 10618 |
| Ending Page | 10627 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C8TC03610A |
| Volume Number | 6 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c8/tc/c8tc03610a/c8tc03610a1.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
