Vibrational recognition of hydrogen-bonded water networks on a metal surface
文献类型：期刊论文
| 作者 | Meng, S ; Xu, LF ; Wang, EG ; Gao, SW |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2002 |
| 卷号 | 89期号:17 |
| 关键词 | TOTAL-ENERGY CALCULATIONS WAVE BASIS-SET MOLECULAR-DYNAMICS 2-DIMENSIONAL ICE PT(111) ADSORPTION H2O RU(001) OXYGEN |
| ISSN号 | 0031-9007 |
| 通讯作者 | Meng, S (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The crystal structure and magnetic and electronic transport properties of the ternary intermediate compound Pr5Si2Ge2 were investigated by means of x-ray powder diffraction, magnetic and electrical resistance measurements. The compound has two polymorphs: alpha-Pr5Si2Ge2 crystallizing in a monoclinic structure with space group P112(1)/a, for the as-cast sample, and alpha-Pr5Si2Ge2 crystallizing in a tetragonal structure with space group P4(1)2(1)2, for. the sample annealed at 1273 K. The average interatomic distances of magnetic Pr atoms and the amounts of covalent (Si, Ge)-(Si, Ge) bond pairs in these two phases are different, which may be, responsible for their different magnetic properties. The Curie temperatures T-C of alpha-Pr5Si2Ge2 and beta-Pr5Si2Ge2 are 38 and 50 K, respectively. An irreversibility between zero-field-cooling and field-cooling magnetization curves is observed. The zero-field resistance of these two phases exhibits an anomaly near T-C. On the basis of the results of magnetic and electrical resistance measurements, it is inferred that both of these phases exhibit spin-glass-like behaviour. The magnetic properties and structure dependence of the Pr5Si2Ge2 can be elucidated well using the Ruderman-Kittel-Kasuya-Yosida model. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46529]  |
| 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 | Meng, S,Xu, LF,Wang, EG,et al. Vibrational recognition of hydrogen-bonded water networks on a metal surface[J]. PHYSICAL REVIEW LETTERS,2002,89(17). |
| APA | Meng, S,Xu, LF,Wang, EG,&Gao, SW.(2002).Vibrational recognition of hydrogen-bonded water networks on a metal surface.PHYSICAL REVIEW LETTERS,89(17). |
| MLA | Meng, S,et al."Vibrational recognition of hydrogen-bonded water networks on a metal surface".PHYSICAL REVIEW LETTERS 89.17(2002). |
入库方式： OAI收割
来源：物理研究所
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