Bonding characters of Al-containing bulk metallic glasses studied by Al-27 NMR
文献类型：期刊论文
| 作者 | Xi, XK ; Sandor, MT ; Wang, HJ ; Wang, JQ ; Hwang, W ; Wu, Y |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2011 |
| 卷号 | 23期号:11 |
| 关键词 | CU-ZR-AL ELECTRONIC-STRUCTURE MECHANICAL-PROPERTIES FORMING ABILITY |
| ISSN号 | 0953-8984 |
| 通讯作者 | Xi, XK: Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. |
| 中文摘要 | We report very small Al-27 metallic shifts in a series of Cu-Zr-Al bulk metallic glasses. This observation and the Korringa type of spin-lattice relaxation behavior suggest that s-character wavefunctions weakly participate in bonding and opens the possibility of enhanced covalency (pd hybridization) with increasing Al concentration, in good agreement with elastic constants and hardness measurements. Moreover, ab initio calculations show that this bonding character originates from the strong Al 3p band and Zr 4d band hybridization since their atomic energy levels are closer to each other while the Al 3s band is localized far below the Fermi level. This study might provide a chemical view for understanding flow and fracture mechanisms of these bulk glass-forming alloys. |
| 收录类别 | SCI |
| 资助信息 | US Army Research Office [W911NF-09-1-0343]; China NSF [50621061, 51071171]; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34284]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xi, XK,Sandor, MT,Wang, HJ,et al. Bonding characters of Al-containing bulk metallic glasses studied by Al-27 NMR[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2011,23(11). |
| APA | Xi, XK,Sandor, MT,Wang, HJ,Wang, JQ,Hwang, W,&Wu, Y.(2011).Bonding characters of Al-containing bulk metallic glasses studied by Al-27 NMR.JOURNAL OF PHYSICS-CONDENSED MATTER,23(11). |
| MLA | Xi, XK,et al."Bonding characters of Al-containing bulk metallic glasses studied by Al-27 NMR".JOURNAL OF PHYSICS-CONDENSED MATTER 23.11(2011). |
入库方式： OAI收割
来源：物理研究所
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