Tunable metal-insulator transition in Nd1-xYxNiO3 (x=0.3, 0.4) perovskites thin film at near room temperature
文献类型：期刊论文
| 作者 | Shao, T; Qi, ZM; Wang, YY; Li, YY; Yang, M; Wang, Y; Zhang, GB; Liu, M |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2015 |
| 卷号 | 107期号:2页码:— |
| 关键词 | RAY-ABSORPTION SPECTROSCOPY RNIO3 PEROVSKITES LOCAL-STRUCTURE |
| ISSN号 | 0003-6951 |
| 通讯作者 | Qi, ZM (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China. |
| 英文摘要 | Metal-insulator transition (MIT) occurs due to the charge disproportionation and lattice distortions in rare-earth nickelates. Existing studies revealed that the MIT behavior of rare-earth nickelates is fairly sensitive to external stress/pressure, suggesting a viable route for MIT strain engineering. Unlike applying extrinsic strain, the MIT can also be modulated by through rare-earth cation mixing, which can be viewed as intrinsic quantum stress. We choose Nd1-xYxNiO3 (x = 0.3, 0.4) perovskites thin films as a prototype system to exhibit the tunable sharp MIT at near room temperature. By adjusting Y concentration, the transition temperature of the thin films can be changed within the range of 340-360 K. X-ray diffraction, X-ray absorption tine structure (XAFS), and in situ infrared spectroscopy are employed to probe the structural and optical property variation affected by composition and temperature. The infrared transmission intensity decreases with temperature across the MIT, indicating a pronounced thermochromic effect. Meanwhile, the XAFS result exhibits that the crystal atomistic structure changes accompanying with the Y atoms incorporation and MIT phase transition. The heavily doped Y atoms result in the pre-edge peak descent and Ni-O bond elongation, suggesting an enhanced charge disproportionation effect and the weakening of hybridization between Ni-3d and O-2p orbits. (C) 2015 AIP Publishing LLC. |
| 语种 | 英语 |
| WOS记录号 | WOS:000358530300012 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/25087]  |
| 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 | Shao, T,Qi, ZM,Wang, YY,et al. Tunable metal-insulator transition in Nd1-xYxNiO3 (x=0.3, 0.4) perovskites thin film at near room temperature[J]. APPLIED PHYSICS LETTERS,2015,107(2):—. |
| APA | Shao, T.,Qi, ZM.,Wang, YY.,Li, YY.,Yang, M.,...&Liu, M.(2015).Tunable metal-insulator transition in Nd1-xYxNiO3 (x=0.3, 0.4) perovskites thin film at near room temperature.APPLIED PHYSICS LETTERS,107(2),—. |
| MLA | Shao, T,et al."Tunable metal-insulator transition in Nd1-xYxNiO3 (x=0.3, 0.4) perovskites thin film at near room temperature".APPLIED PHYSICS LETTERS 107.2(2015):—. |
入库方式： OAI收割
来源：上海应用物理研究所
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