Size-dependent phase transition of Er2O3 under high pressure
文献类型：期刊论文
| 作者 | Ren, XT; Yan, XZ; Yu, ZH; Li, WT; Yang, K; Wang, XL; Liu, YZ; Wang, L |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 112期号:14页码:- |
| 关键词 | Rare-earth Sesquioxides Structural Transformations Ab-initio Nanocrystals Amorphization Stability Shape |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.5017815 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The size effect on the structural and optical properties of cubic Er2O3 was investigated under pressure by in-situ angular dispersive synchrotron x-ray diffraction (AD-XRD), Raman scattering, photoluminescence (PL), and impedance spectroscopy. Contrary to the phase transition sequence of cubic -> monoclinic -> hexagonal in bulk Er2O3, a transformation from cubic directly to hexagonal was observed in Er2O3 nanoparticals. Compared with bulk Er2O3, nano-Er2O3 showed an obvious elevation of phase transition pressure and larger bulk module. A third- order Birch- Murnaghan fitting yields zero pressure bulk moduli (B-0) of 181(5), and 226(4) GPa and their pressure derivatives (B'(0)) of 4.0(7), 1.9(5) for the cubic and hexagonal phases, respectively. The multiple PL lines of S-4(3/2)-> I-4(15/2) originating from the cubic phase are also altered due to phase transformation. The impedance spectroscopy indicated that the nano-Er2O3 is an insulator up to 30 GPa. These findings give a fresh understanding of size influence on the phase transition sequences and sheds light on the applications of nano-Er2O3. Published by AIP Publishing. |
| 语种 | 英语 |
| WOS记录号 | WOS:000429344100029 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/29139]  |
| 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 |
| 作者单位 | 1.Ren, XT 2.Yan, XZ 3.Yu, ZH 4.Li, WT 5.Yang, K 6.Wang, XL 7.Liu, YZ 8.Wang, L |
| 推荐引用方式 GB/T 7714 | Ren, XT,Yan, XZ,Yu, ZH,et al. Size-dependent phase transition of Er2O3 under high pressure[J]. APPLIED PHYSICS LETTERS,2018,112(14):-. |
| APA | Ren, XT.,Yan, XZ.,Yu, ZH.,Li, WT.,Yang, K.,...&Wang, L.(2018).Size-dependent phase transition of Er2O3 under high pressure.APPLIED PHYSICS LETTERS,112(14),-. |
| MLA | Ren, XT,et al."Size-dependent phase transition of Er2O3 under high pressure".APPLIED PHYSICS LETTERS 112.14(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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