Origin of superior hardening properties in kcuta3o9-doped k0.5na0.5nbo3 lead-free piezoelectric ceramics
文献类型：期刊论文
| 作者 | Wang, Tao1; He, Lihua1; Deng, Yunlong1; Zheng, Qiaoji1; Li, Qiang1; Jiang, Na1; Xu, Chenggang1,2; Cao, Xingzhong2; Lin, Dunmin1 |
| 刊名 | Ceramics international
 |
| 出版日期 | 2017-12-01 |
| 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 |
| 通讯作者 | Cao, xingzhong(caoxzh@ihep.ac.cn) ; Lin, dunmin(ddmd222@sicnu.edu.cn) |
| 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. |
| 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 |
| WOS类目 | Materials Science, Ceramics |
| 语种 | 英语 |
| WOS记录号 | WOS:000413175300150 |
| 出版者 | ELSEVIER SCI LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177150 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Cao, Xingzhong; Lin, Dunmin |
| 作者单位 | 1.Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610066, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Multidiscipline Res Div, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Tao,He, Lihua,Deng, Yunlong,et al. Origin of superior hardening properties in kcuta3o9-doped k0.5na0.5nbo3 lead-free piezoelectric ceramics[J]. Ceramics international,2017,43(17):15666-15677. |
| APA | Wang, Tao.,He, Lihua.,Deng, Yunlong.,Zheng, Qiaoji.,Li, Qiang.,...&Lin, Dunmin.(2017).Origin of superior hardening properties in kcuta3o9-doped k0.5na0.5nbo3 lead-free piezoelectric ceramics.Ceramics international,43(17),15666-15677. |
| MLA | Wang, Tao,et al."Origin of superior hardening properties in kcuta3o9-doped k0.5na0.5nbo3 lead-free piezoelectric ceramics".Ceramics international 43.17(2017):15666-15677. |
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