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| Size-dependent phase transition of Er2O3 under high pressure | |
| Ren, XT; Yan, XZ; Yu, ZH; Li, WT; Yang, K; Wang, XL; Liu, YZ; Wang, L | |
| 2018 | |
| Source Publication | APPLIED PHYSICS LETTERS
 |
| ISSN | 0003-6951 |
| Volume | 112Issue:14Pages:- |
| Subtype | 期刊论文 |
| Abstract | 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. |
| Keyword | Rare-earth Sesquioxides Structural Transformations Ab-initio Nanocrystals Amorphization Stability Shape |
| DOI | 10.1063/1.5017815 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000429344100029 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/29139 |
| Collection | 中科院上海应用物理研究所2011-2018年 |
| Affiliation | 1.Ren, XT 2.Yan, XZ 3.Yu, ZH 4.Li, WT 5.Yang, K 6.Wang, XL 7.Liu, YZ 8.Wang, L |
| Recommended Citation 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):-. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Size-dependent phase（2690KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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