Effects of substituting La(3+), Y(3+) and Ce(4+) for Ca(2+) on the high temperature transport and thermoelectric properties of CaMnO(3)
文献类型：期刊论文
| 作者 | Y. Wang ; Y. Sui ; X. J. Wang ; W. H. Su |
| 刊名 | Journal of Physics D-Applied Physics
 |
| 出版日期 | 2009 |
| 卷号 | 42期号:5 |
| 关键词 | metal-insulator-transition performance ca3co4o9 system magnetoresistance fabrication antimonides |
| ISSN号 | 0022-3727 |
| 中文摘要 | We report the high temperature transport and thermoelectric properties of Ca(1-x)R(x)MnO(3) (R = La, Y and Ce) perovskites in the electron-doped range. The substitution of different valence ions has a similar effect on the thermoelectric properties of this system. Resistivity and thermopower change regularly as the enhancement of doping level; they are both determined mainly by electron concentration. Thermal conductivity is dependent mainly on the weight of R ions, and it decreases monotonically with increasing doping content. The optimal electron concentration is around 0.1-0.12 for thermoelectric performance; in this range the ZT value of Ca(0.9)La(0.1)MnO(3) exceeds 0.12 at 1000 K, exhibiting a good high temperature thermoelectric applied potential. Besides, the hopping nature of the charge carriers is well explained in the framework of polaron theory. The high temperature thermopower values which are inconsistent with nominal Mn(3+) ion t(2g)(3)e(g)(1) configuration are also discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32398]  |
| 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,X. J. Wang,et al. Effects of substituting La(3+), Y(3+) and Ce(4+) for Ca(2+) on the high temperature transport and thermoelectric properties of CaMnO(3)[J]. Journal of Physics D-Applied Physics,2009,42(5). |
| APA | Y. Wang,Y. Sui,X. J. Wang,&W. H. Su.(2009).Effects of substituting La(3+), Y(3+) and Ce(4+) for Ca(2+) on the high temperature transport and thermoelectric properties of CaMnO(3).Journal of Physics D-Applied Physics,42(5). |
| MLA | Y. Wang,et al."Effects of substituting La(3+), Y(3+) and Ce(4+) for Ca(2+) on the high temperature transport and thermoelectric properties of CaMnO(3)".Journal of Physics D-Applied Physics 42.5(2009). |
入库方式： OAI收割
来源：金属研究所
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