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Impact of Phase Structure on Piezoelectric Properties of Textured Lead-Free Ceramics
| Content Provider | MDPI |
|---|---|
| Author | Gao, Xiaoyi Dong, Nannan Xia, Fangquan Guo, Qinghu Hao, Hua Liu, Hanxing Zhang, Shujun |
| Copyright Year | 2020 |
| Description | The impact of phase structure on piezoelectric performances of textured Na0.5Bi0.5TiO3 (NBT) based lead-free ceramics was studied, including 0.88NBT-0.08K0.5Bi0.5TiO3-0.04BaTiO3 (88NBT) with morphotropic phase boundary (MPB) composition and 0.90NBT-0.07K0.5Bi0.5TiO3-0.03BaTiO3 (90NBT) with rhombohedral phase. Both textured ceramics exhibit a high Lotgering factor, being on the order of f~96%. The piezoelectric coefficients of the textured 88NBT and 90NBT ceramics are increased by 20% and 60%, respectively, comparing to their randomly oriented ceramics. The piezoelectric enhancement of 90NBT textured ceramic is three times higher than 88NBT, revealing the phase structure plays a significant role in enhancing the piezoelectric performances of textured ceramics. Of particular significance is that the 90NBT textured ceramic exhibits almost hysteresis-free strain behavior. The enhanced piezoelectric property with minimal strain hysteresis is attributed to the poled rhombohedral engineered domain configuration. |
| Starting Page | 367 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst10050367 |
| Journal | Crystals |
| Issue Number | 5 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-05-03 |
| Access Restriction | Open |
| Subject Keyword | Crystals Ceramics Textured Ceramics Phase Structure Rayleigh Analysis Strain Behavior |
| Content Type | Text |
| Resource Type | Article |