Local-structure change rendered by electronic localization-delocalization transition in cerium-based metallic glasses
文献类型：期刊论文
| 作者 | Bednarcik, J; Zhu, YC ; Tang, MB; Zheng, LR; Li, R; Shen, J; Eckert, J; Zhu YC(朱英才); Zheng LR(郑黎荣); Luo, Q
|
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2018 |
| 卷号 | 97期号:6页码:64104 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.97.064104 |
| 文献子类 | Article |
| 英文摘要 | With increasing temperature, metallic glasses (MGs) undergo first glass transitionwithout pronounced structural change and then crystallization with distinct variation in structure and properties. The present study shows a structural change of short-range order induced by an electron-delocalization transition, along with an unusual large-volume shrinkage in Ce-based MGs. An f-electron localization-delocalization transition with thermal hysteresis is observed from the temperature dependence of x-ray absorption spectroscopy and resonant inelastic x-ray scattering spectra, indicating an inheritance of the 4f configuration of pure Ce. However, the delocalization transition becomes broadened due to the local structural heterogeneity and related fluctuation of 4f levels in the Ce-based MGs. The amorphous structure regulated 4f delocalization of Ce leads to bond shortening and abnormal structure change of the topological and chemical short-range orders. Due to the hierarchical bonding nature, the structure should change in a similar manner on different length scales (but not isostructurally like the Ce metal) in Ce-based MGs. |
| 电子版国际标准刊号 | 2469-9969 |
| WOS关键词 | MEDIUM-RANGE ORDER ; VOLUME COLLAPSE ; ALLOYS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000424744900005 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285622]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 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 | Bednarcik, J,Zhu, YC,Tang, MB,et al. Local-structure change rendered by electronic localization-delocalization transition in cerium-based metallic glasses[J]. PHYSICAL REVIEW B,2018,97(6):64104. |
| APA | Bednarcik, J.,Zhu, YC.,Tang, MB.,Zheng, LR.,Li, R.,...&Swarbrick, JC.(2018).Local-structure change rendered by electronic localization-delocalization transition in cerium-based metallic glasses.PHYSICAL REVIEW B,97(6),64104. |
| MLA | Bednarcik, J,et al."Local-structure change rendered by electronic localization-delocalization transition in cerium-based metallic glasses".PHYSICAL REVIEW B 97.6(2018):64104. |
入库方式： OAI收割
来源：高能物理研究所
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