High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)
文献类型：期刊论文
| 作者 | Y. Wang ; Y. Sui ; W. H. Su |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2008 |
| 卷号 | 104期号:9 |
| 关键词 | transport-properties oxide system performance fabrication antimonides manganites ca3co4o9 physics camno3 |
| ISSN号 | 0021-8979 |
| 中文摘要 | Electron-doped perovskite manganite Ca(0.9)R(0.1)MnO(3) (R= La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) polycrystalline samples were prepared and their transport and thermoelectric properties were studied from room temperature to 1000 K. The transport behavior for all the samples is adiabatic small polaron hopping mechanism below 600 K but changes to metallic conductivity at higher temperature. Above 600 K, more 3d electrons of Mn(3+) ions will occupy e(g) orbitals, resulting in the variation in thermoelectric power values. For all the samples, thermoelectric power is only determined by carrier concentration, but resistivity also rests with effective bandwidth. The size matching between Ca(2+) and R(3+) ions together with heavier R(3+) doping can improve thermoelectric performance evidently. Combining these two factors, Ca(0.9)Dy(0.1)MnO(3) and Ca(0.9)Yb(0.1)MnO(3) reach ZT=0.2 at 1000 K, suggesting that they can be efficient high temperature n-type thermoelectric oxide materials. (c) 2008 American Institute of Physics. [DOI: 10.1063/1.3003065] |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33160]  |
| 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,W. H. Su. High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)[J]. Journal of Applied Physics,2008,104(9). |
| APA | Y. Wang,Y. Sui,&W. H. Su.(2008).High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb).Journal of Applied Physics,104(9). |
| MLA | Y. Wang,et al."High temperature thermoelectric characteristics of Ca(0.9)R(0.1)MnO(3) (R=La, Pr, ... , Yb)".Journal of Applied Physics 104.9(2008). |
入库方式： OAI收割
来源：金属研究所
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