期刊論文
| 學年 | 97 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2009-01-01 |
| 作品名稱 | Thickness-Dependent Electronic Structure of Intermetallic CeCo2 Nanothin Films Studied by X-ray Absorption Spectroscopy |
| 作品名稱（其他語言） | |
| 著者 | Dong, Chung-Li; Chen, Chi-Liang; Asokan, Kandasami; Chang, Ching-Lin; Chen, Yang-Yuan; Lee, Jyh-Fu; Guo, Jinghua |
| 單位 | 淡江大學物理學系 |
| 出版者 | Washington, DC: American Chemical Society |
| 著錄名稱、卷期、頁數 | Langmuir 25(13), pp.7568-7572 |
| 摘要 | We report the electronic structure study of intermetallic CeCo2 nanothin films of various thicknesses by X-ray absorption near-edge structure (XANES) spectroscopy at Ce L3-, Co K-, and L2,3-edges. The Ce L3-edge absorption spectra reveal that the contribution of tetravalent Ce component increases with the film thickness, and all investigated nanothin films exhibit intermediate valence nature. Variation of the spectral intensities observed at the Co K-edge threshold implies modification in the Co 3d states and the enhancement of 3d-4f-5d hybridization. The Co 3d and Ce 4f occupation numbers were estimated from these spectroscopic results. The present study brings out how the surface-to-bulk ratio and the charge transfer between Ce and Co ions affect the electronic structure of nanothin films. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0743-7463; 1520-5827 |
| 期刊性質 | 國外 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | Asokan, Kandasami |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/91620 ) |