The heat capacity measurements of CoSb3-based Skutterudite compounds
文献类型：期刊论文
| 作者 | Zhang, YB ; Li, CR ; Xu, GY ; Du, ZM ; Guo, CP ; Li, JB |
| 刊名 | INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
 |
| 出版日期 | 2010 |
| 卷号 | 101期号:6页码:808 |
| 关键词 | SUBSTITUTED COSB3 SKUTTERUDITE THERMOELECTRIC PROPERTIES |
| ISSN号 | 1862-5282 |
| 通讯作者 | Li, CR (reprint author), Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China. |
| 中文摘要 | We have observed the transport properties in magnetic tunnel junction with the multilayered structure: La(0.67)Sr(0.33)MnO(3) (50 nm)/Al-O (1 nm)/CoFeB (5 nm)/Ta (10 nm)/Ru (10 nm). The maximum normal tunneling magnetoresistance (TMR) ratio was found to be 12.4% at a temperature range around 100 K, and the maximum inverse TMR ratio was observed to be similar to 3% at a temperature of 5 K. The inverse TMR decreases with increasing temperature until it reaches a temperature range of around 50 K, whereby it switches to the normal TMR behavior. The appearance of inverse TMR at low temperatures is attributed to the presence of minority-spin density of states (DOS) of half-metal La(0.67)Sr(0.33)MnO(3) around the Fermi level present at the half-metal-insulator interface. The vanishing of inverse TMR and increase of normal TMR above certain temperature range is due to no contribution from the minority-spin DOS in the tunneling process. These results were found to be reproducible and the TMR ratio of more than 3% and 11% was obtained at room temperature before and after annealing at a temperature of 235 K for an annealing time of one hour, respectively. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [50671009, 50731002]; National Doctorate Fund of the State Education Ministry of China [20060008015] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/45198]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, YB,Li, CR,Xu, GY,et al. The heat capacity measurements of CoSb3-based Skutterudite compounds[J]. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,2010,101(6):808. |
| APA | Zhang, YB,Li, CR,Xu, GY,Du, ZM,Guo, CP,&Li, JB.(2010).The heat capacity measurements of CoSb3-based Skutterudite compounds.INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,101(6),808. |
| MLA | Zhang, YB,et al."The heat capacity measurements of CoSb3-based Skutterudite compounds".INTERNATIONAL JOURNAL OF MATERIALS RESEARCH 101.6(2010):808. |
入库方式： OAI收割
来源：物理研究所
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