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, J; Sun, W; Zhou, Z; Bai, Y; Wang, ZJ; Tian, G; Chen, DY; Gao, XS; Zhu, FY; Li, JF |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2017 |
| 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 |
| DOI | 10.1021/acsami.7b02263 |
| 文献子类 | 期刊论文 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000399965700045 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27301]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Luo, J,Sun, W,Zhou, Z,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, J.,Sun, W.,Zhou, Z.,Bai, Y.,Wang, ZJ.,...&Li, JF.(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, J,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：上海应用物理研究所
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