Characterization of 3d transition-metal diborides by x-ray-absorption spectra at the metal k edge
文献类型：期刊论文
| 作者 | Chu, WS; Wu, ZY; Agrestini, S; Bianconi, A; Marcelli, A; Liu, WH |
| 刊名 | International journal of modern physics b
 |
| 出版日期 | 2005-07-10 |
| 卷号 | 19期号:15-17页码:2386-2391 |
| 关键词 | Tansition-metal diborides Xanes Multiple-scattering |
| ISSN号 | 0217-9792 |
| 通讯作者 | Wu, zy() |
| 英文摘要 | The 3d transition-metal diborides tib2, vb2 and crb2 have been characterized by x-ray absorption near-edge-structure (xanes) spectroscopy at the metal k edges. xanes spectra at the ti, v and cr k-edges of tib2, vb2 and crb2, respectively, show similar spectral features up to an energy of about 70 ev above threshold. these features can be correlated to their specific atomic arrangement and electronic structure via multiple-scattering calculations as a function of the cluster size. actually the second pre-edge feature is assigned to a transition from the metal is core state to the central metal 4p state hybridized with 3d band state of the higher-shell metal atoms. the first weak feature on the rising part of the edge is due to higher-shells multiple scattering contributions, suggesting that the transition features at the metal k-edge xanes of 3d transition-metal diborides are strongly affected by medium or long-range order contributions. |
| WOS关键词 | MULTIPLE-SCATTERING THEORY ; FINE-STRUCTURE ; SUPERCONDUCTIVITY ; TITANIUM ; CLUSTERS ; SCHEME ; BORON ; TIB2 ; MGB2 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied ; Physics, Condensed Matter ; Physics, Mathematical |
| 语种 | 英语 |
| WOS记录号 | WOS:000231237000013 |
| 出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175794 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wu, ZY |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Sci & Technol China, Anhua 230026, Peoples R China 3.Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy 4.Univ Roma La Sapienza, I-00185 Rome, Italy 5.Unita INFM, I-00185 Rome, Italy |
| 推荐引用方式 GB/T 7714 | Chu, WS,Wu, ZY,Agrestini, S,et al. Characterization of 3d transition-metal diborides by x-ray-absorption spectra at the metal k edge[J]. International journal of modern physics b,2005,19(15-17):2386-2391. |
| APA | Chu, WS,Wu, ZY,Agrestini, S,Bianconi, A,Marcelli, A,&Liu, WH.(2005).Characterization of 3d transition-metal diborides by x-ray-absorption spectra at the metal k edge.International journal of modern physics b,19(15-17),2386-2391. |
| MLA | Chu, WS,et al."Characterization of 3d transition-metal diborides by x-ray-absorption spectra at the metal k edge".International journal of modern physics b 19.15-17(2005):2386-2391. |
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