High Temperature Thermoelectric Response of Electron-Doped CaMnO(3)
文献类型：期刊论文
| 作者 | Y. Wang ; Y. Sui ; H. J. Fan ; X. J. Wang ; Y. T. Su ; W. H. Su ; X. Y. Liu |
| 刊名 | Chemistry of Materials
 |
| 出版日期 | 2009 |
| 卷号 | 21期号:19页码:4653-4660 |
| 关键词 | transport-properties infinite dimensions recent progress thin-films oxide transition ca3co4o9 systems magnetoresistance fabrication |
| ISSN号 | 0897-4756 |
| 中文摘要 | We report a systematical investigation on the high temperature thermoelectric response of Ca(1-x)R(x)MnO(3) (R = rare-earth) perovskites in the electron-doped range. The results reveal that electron concentration is the dominant factor for the high temperature electrical transport properties whereas the weight and size of R ions dominate the thermal transport properties. As the doping level varies, the best thermoelectric performance is observed at the relative electron concentration around 0.1. However, in the case of a fixed electron concentration, structural distortions become important since bandwidth has an observable influence on resistivity. By combining the three factors, electron concentration, crystal structure, and the weight/size of R ions, the largest thermoelectric figure of merit ZT for Ca(1-x)R(x)MnO(3) reaches 0.2 at 1000 K. But this ZT value is still too far from the application criterion (ZT > 1). Using the dynamical mean field theory, we demonstrate that a ZT value larger than one in electron-doped CaMnO(3) systems seems rather unlikely. Some strategies for searching new thermoelectric materials with high performance in transition metal oxides are proposed. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32396]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. Wang,Y. Sui,H. J. Fan,et al. High Temperature Thermoelectric Response of Electron-Doped CaMnO(3)[J]. Chemistry of Materials,2009,21(19):4653-4660. |
| APA | Y. Wang.,Y. Sui.,H. J. Fan.,X. J. Wang.,Y. T. Su.,...&X. Y. Liu.(2009).High Temperature Thermoelectric Response of Electron-Doped CaMnO(3).Chemistry of Materials,21(19),4653-4660. |
| MLA | Y. Wang,et al."High Temperature Thermoelectric Response of Electron-Doped CaMnO(3)".Chemistry of Materials 21.19(2009):4653-4660. |
入库方式： OAI收割
来源：金属研究所
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