Negative expansions of interatomic distances in metallic melts
文献类型：期刊论文
| 作者 | Lou, HB; Wang, XD; Cao, QP; Zhang, DX; Zhang, J; Hu, TD; Mao, HK; Jiang, JZ;张静; Hu TD(胡天斗)
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| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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| 出版日期 | 2013 |
| 卷号 | 110期号:25页码:10068-10072 |
| 关键词 | metal liquids bond lengths contraction |
| 英文摘要 | When a material is heated, generally, it dilates. Here, we find a general trend that the average distance between a center atom and atoms in the first nearest-neighbor shell contracts for several metallic melts upon heating. Using synchrotron X-ray diffraction technique and molecular dynamics simulations, we elucidate that this anomaly is caused by the redistribution of polyhedral clusters affected by temperature. In metallic melts, the high-coordinated polyhedra are inclined to evolve into low-coordinated ones with increasing temperature. As the coordination number decreases, the average atomic distance between a center atom and atoms in the first shell of polyhedral clusters is reduced. This phenomenon is a ubiquitous feature for metallic melts consisting of various-sized polyhedra. This finding sheds light on the understanding of atomic structures and thermal behavior of disordered materials and will trigger more experimental and theoretical studies of liquids, amorphous alloys, glasses, and casting temperature effect on solidification process of crystalline materials. |
| 学科主题 | Science & Technology - Other Topics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000321500200022 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224320]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Lou, HB,Wang, XD,Cao, QP,et al. Negative expansions of interatomic distances in metallic melts[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2013,110(25):10068-10072. |
| APA | Lou, HB.,Wang, XD.,Cao, QP.,Zhang, DX.,Zhang, J.,...&胡天斗.(2013).Negative expansions of interatomic distances in metallic melts.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,110(25),10068-10072. |
| MLA | Lou, HB,et al."Negative expansions of interatomic distances in metallic melts".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 110.25(2013):10068-10072. |
入库方式： OAI收割
来源：高能物理研究所
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