期刊論文
| 學年 | 102 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2014-01-22 |
| 作品名稱 | Correlation between the electronic structure and the thermoelectric properties of Gd-doped CaMnO3-δ |
| 作品名稱（其他語言） | |
| 著者 | Liu, Chia-Jyi; Wang, Wei-Cheng; Yuan, J.-J.; Chen, Jeng-Lung; Wu, Mei-Huei; Chang, Ching-Lin |
| 單位 | 淡江大學物理學系 |
| 出版者 | New York: Springer New York LLC |
| 著錄名稱、卷期、頁數 | Journal of Electronic Materials 43(6), pp.2094-2098 |
| 摘要 | We report x-ray absorption near edge structure (XANES) on bulk samples of Ca1−x Gd x MnO3+δ with x = 0, 0.02, and 0.05. The transport properties measurements indicate that both resistivity and the absolute value of thermopower decrease with increasing x. Meanwhile, the temperature dependence of resistivity changes from non-metallic CaMnO3−δ to metallic for samples of x = 0.02 and 0.05. XANES spectra at the O K-edge, Mn L 2,3-edge, and Ca L 2,3-edge indicate that Mn 3d–O 2p hybridization increases considerably, and unoccupied (3d–4s) states of Ca decrease with increasing substitution content. The increases of Mn 3d–O 2p hybridization might be responsible for the decrease of the resistivity and the absolute value of thermopower upon partial Gd substitution for Ca. |
| 關鍵字 | Thermoelectric property;manganese oxide;XANES;carrier concentration |
| 語言 | en_US |
| ISSN | 1543-186X |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/98557 ) |