Origin of superior hardening properties in KCuTa3O9-doped K0.5Na0.5NbO3lead-free piezoelectric ceramics
文献类型：期刊论文
| 作者 | Cao XZ(曹兴忠) ; Wang, Tao; He, Lihua; Deng, Yunlong; Zheng, Qiaoji; Li, Qiang; Jiang, Na; Xu, Chenggang; Cao, Xingzhong; Lin, Dunmin
|
| 刊名 | Ceramics International
 |
| 出版日期 | 2017 |
| 卷号 | 43期号:17页码:15666-15677 |
| 关键词 | Lead-free piezoelectric ceramic Piezoelectricity Ferroelectricity Defect dipoles |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2017.08.126 |
| 文献子类 | Article |
| 英文摘要 | K0.5Na0.5NbO3 + x mol KCuTa3O9 lead-free piezoelectric ceramics with superior hardening properties were synthesized by a solid-state reaction method. The addition of a small amount of KCuTa3O9 (x <= 0.04) induces the formation of (Cu'''(Nb) - V-O(..))' (DC1) and (V-O(..) - Cu'''(Nb) - V-O(..) )(.) (DC2) defect dipoles; however, DC2 becomes dominant in the ceramics with high levels of KCuTa3O9. The DC1 can provide a restoring force to reverse the switched polarization, inducing double hysteresis loops, while DC2 slightly impedes polarization back-switching. Because of the combination of DC1 and DC2 associates, the ceramics become gradually "hardened" with x increasing from 0 to 0.01, giving a superhigh mechanical quality factor Q(m) of 2494 at x = 0.01, and then are gradually softened with x further increasing to 0.07, exhibiting a relatively low Qm of 549 at x = 0.07. Our study shows that the control of defect structures can effectively tailor the ferroelectricity and piezoelectricity of K0.5Na0.5NbO3-based lead-free ceramics. |
| 电子版国际标准刊号 | 1873-3956 |
| WOS关键词 | POTASSIUM-SODIUM NIOBATE ; ELECTRICAL-PROPERTIES ; DIELECTRIC-PROPERTIES ; DEFECT DIPOLES ; PZT CERAMICS ; FERROELECTRIC PEROVSKITES ; PARAMAGNETIC-RESONANCE ; SINTERING TEMPERATURE ; FREE PIEZOCERAMICS ; PHASE BOUNDARIES |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000413175300150 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285302]  |
| 专题 | 中国科学院高能物理研究所_中国散裂中子源 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Cao XZ,Wang, Tao,He, Lihua,et al. Origin of superior hardening properties in KCuTa3O9-doped K0.5Na0.5NbO3lead-free piezoelectric ceramics[J]. Ceramics International,2017,43(17):15666-15677. |
| APA | 曹兴忠.,Wang, Tao.,He, Lihua.,Deng, Yunlong.,Zheng, Qiaoji.,...&徐成刚.(2017).Origin of superior hardening properties in KCuTa3O9-doped K0.5Na0.5NbO3lead-free piezoelectric ceramics.Ceramics International,43(17),15666-15677. |
| MLA | 曹兴忠,et al."Origin of superior hardening properties in KCuTa3O9-doped K0.5Na0.5NbO3lead-free piezoelectric ceramics".Ceramics International 43.17(2017):15666-15677. |
入库方式： OAI收割
来源：高能物理研究所
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