Facet-dependent electrical and mechanical properties of polyhedral Cu2O under compression
文献类型：期刊论文
| 作者 | Wang, TY; Ou, TJ; Liu, CL; Li, SJ; Cheng H(程虎); Gao, CX; Han, YH; Ma, YZ; Sui, YM; Cheng, H
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2018 |
| 卷号 | 762页码:835-841 |
| 关键词 | Facet-dependent Cuprous oxide Electrical properties Mechanical stability High pressure |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2018.05.215 |
| 文献子类 | Article |
| 英文摘要 | In this paper, both the facet-dependent electrical properties and mechanical stability of submicron-sized polyhedral Cu2O are investigated with in-situ resistivity measurements with pressure up to 25.0 GPa. The pressure-induced morphology changes are characterized by scanning/transmission electron microscopy. X-ray photoelectron spectroscopy measurements are also adopted to rationalize the diversity of the electrical resistivity of polyhedral Cu2O under compression. The electrical properties of cubic, truncated octahedral, and octahedral Cu2O show extremely different pressure dependence, which can be attributed to the preferential adsorption of oxygen on Cu2O (111) facet. The anomalous changes in electrical resistivity at 0.7-2.2, 8.5,10.3, and 21.6 GPa are due to pressure-induced structural phase transitions of the Cu2O crystals. The dramatic reductions of resistivity in cubes and octahedras at 15.0 GPa and of truncated octahedras at 21.2 GPa are driven by pressure-induced crush and nanocrystallization of Cu2O crystals. The mechanical stability of truncated octahedral Cu2O is better than those of both cubic and octahedral Cu2O. Our results not only elucidate the underlying mechanisms for understanding the two previously reported pressure-dependent electrical resistance change trends difference, but also give a reasonably explanation of the facet-dependent mechanical property of Cu2O. (C) 2018 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1873-4669 |
| WOS关键词 | COMPARATIVE PHOTOCATALYTIC ACTIVITY ; HIGH-PRESSURE ; COPPER OXIDES ; CRYSTALS ; HETEROJUNCTION ; NANOCRYSTALS ; TEMPERATURE ; MORPHOLOGY ; REDUCTION ; EVOLUTION |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000436600000097 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286070]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 中国科学院高能物理研究所_中国散裂中子源 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Wang, TY,Ou, TJ,Liu, CL,et al. Facet-dependent electrical and mechanical properties of polyhedral Cu2O under compression[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,762:835-841. |
| APA | Wang, TY.,Ou, TJ.,Liu, CL.,Li, SJ.,程虎.,...&Dong, Q.(2018).Facet-dependent electrical and mechanical properties of polyhedral Cu2O under compression.JOURNAL OF ALLOYS AND COMPOUNDS,762,835-841. |
| MLA | Wang, TY,et al."Facet-dependent electrical and mechanical properties of polyhedral Cu2O under compression".JOURNAL OF ALLOYS AND COMPOUNDS 762(2018):835-841. |
入库方式： OAI收割
来源：高能物理研究所
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