A New Ferroelectric Phase of YMnO3 Induced by Oxygen- Vacancy Ordering
文献类型：期刊论文
| 作者 | Zhang, QH ; Guo, SD ; Ge, BH ; Chen, P ; Yao, Y ; Wang, LJ ; Gu, L ; Wang, YG ; Duan, XF ; Jin, CQ ; Liu, BG ; Yu, RC |
| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2014 |
| 卷号 | 97期号:4页码:1264 |
| ISSN号 | 0002-7820 |
| 通讯作者 | Yu, RC (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Manganese oxides are good candidates of strongly correlated electron materials due to the uniqueness of electronic structure of manganese and the mobility of oxygen among lattice sites under external impacts. Here, we used electron beam as the excitation source to explore the structural evolution of YMnO3 and identified a new phase under the radiation of electron beam in the transmission electron microscope. Analyses of the electron energy-loss spectra reveal that this phase originates from ordered oxygen vacancy. We applied the first principles calculation to pick out the optimized stable structure with a lower polarization, and verified its correctness by electron diffraction and image simulations. Analyses of density of states indicate that weak Y-O covalence is favorable for the existence of ferroelectricity, supporting the electrostatic nature of ferroelectricity in the YMnO3. |
| 资助信息 | State Key Development Program for Basic Research of China [2012CB932302, 2010CB934202]; National Natural Science Foundation of China [11174336, 11174359] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59288]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, QH,Guo, SD,Ge, BH,et al. A New Ferroelectric Phase of YMnO3 Induced by Oxygen- Vacancy Ordering[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2014,97(4):1264. |
| APA | Zhang, QH.,Guo, SD.,Ge, BH.,Chen, P.,Yao, Y.,...&Yu, RC.(2014).A New Ferroelectric Phase of YMnO3 Induced by Oxygen- Vacancy Ordering.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,97(4),1264. |
| MLA | Zhang, QH,et al."A New Ferroelectric Phase of YMnO3 Induced by Oxygen- Vacancy Ordering".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 97.4(2014):1264. |
入库方式： OAI收割
来源：物理研究所
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