Domain Evolution and Piezoelectric Response across Thermotropic Phase Boundary in (K,Na)NbO3-Based Epitaxial Thin Films
文献类型：期刊论文
| 作者 | Luo, Jin ; Sun, Wei ; Zhou, Zhen ; Bai, Yu ; Wang, Zhan Jie ; Tian, Guo ; Chen, Deyang ; Gao, Xingsen ; Zhu, Fangyuan ; Li, Jing-Feng |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2017-04-19 |
| 卷号 | 9期号:15页码:13315-13322 |
| 关键词 | lead-free piezoelectric domain evolution phase transition thermotropic phase boundary |
| ISSN号 | 1944-8244 |
| 通讯作者 | Li, JF (reprint author), Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China. |
| 中文摘要 | Recent research progress in (K,Na)NbO3 (KNN)-based lead-free piezoelectric ceramics has attracted increasing attention for their applications to microsystems or micro- electromechanical systems (MEMS) in the form of thin films. This work demonstrates that high-quality KNN-based epitaxial films can be synthesized by a conventional sol-gel method, whose phase structure and domain characteristics have been investigated with emphasis on the temperature effect. A monoclinic M-c structure is observed at room temperature in KNN-based epitaxial films, which is close to but different from the orthorhombic phase in bulk counterparts. Piezoresponse force microscopy (PFM) at elevated temperatures reveals continuous changes of ferroelectric domains in KNN films during heating and cooling cycles between room temperature and 190 degrees C. A distinct change in domain morphology is observed upon heating to 110 degrees C, accompanied by a clear variation of dielectric permittivity suggesting a thermotropic phase transition, which is revealed to belong to a M-c-M-A phase transition on the basis of structural and PFM analysis on local ferroelectric and piezoelectric behaviors. Enhanced piezoelectric response at the thermotropic phase boundary is observed,: which is attributed to active domains and/or nanodomains formed across the boundary. Domain engineering, by utilizing the phase transition should be important and effective in KNN-based films not only for property enhancement but also for its textured ceramics. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 收录类别 | SCI |
| 资助信息 | National Nature Science Foundation of China [51332002]; Ministry of Science and Technology of China [2015CB654605] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78179]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Luo, Jin,Sun, Wei,Zhou, Zhen,et al. Domain Evolution and Piezoelectric Response across Thermotropic Phase Boundary in (K,Na)NbO3-Based Epitaxial Thin Films[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(15):13315-13322. |
| APA | Luo, Jin.,Sun, Wei.,Zhou, Zhen.,Bai, Yu.,Wang, Zhan Jie.,...&Li, Jing-Feng.(2017).Domain Evolution and Piezoelectric Response across Thermotropic Phase Boundary in (K,Na)NbO3-Based Epitaxial Thin Films.ACS APPLIED MATERIALS & INTERFACES,9(15),13315-13322. |
| MLA | Luo, Jin,et al."Domain Evolution and Piezoelectric Response across Thermotropic Phase Boundary in (K,Na)NbO3-Based Epitaxial Thin Films".ACS APPLIED MATERIALS & INTERFACES 9.15(2017):13315-13322. |
入库方式： OAI收割
来源：金属研究所
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