| Anomalous magnetotransport in LaMn1-x Te (x) O-3 | |
| Tan GuoTai ; Chen ZhengHao ; Zhang XiaoZhong | |
| 2010-10-12 ; 2010-10-12 | |
| 关键词 | colossal magnetoresistance La-Te-Mn-O magnetotransport ELECTRONIC-STRUCTURE MAGNETIC-PROPERTIES DEFECT CHEMISTRY DOPED LAMNO3 MANGANITES TRANSPORT MAGNETORESISTANCE PHOTOEMISSION SPECTROSCOPY LAMNO3+/-DELTA Physics, Multidisciplinary |
| 中文摘要 | The LaMn1-x Te (x) O3+delta (x=0.1, 0.2, 0.3) were synthesized using solid-state reaction method for the first time. X-ray photoemission spectrum (XPS) shows that in the samples the Te ions have a valence of Te4+, and Mn3+ ions are partly converted into Mn2+ and Mn4+ due to the excess oxygen and Te doping. The magnetotransport associated with Mn2+, Mn3+ and Mn4+ was investigated. The experimental results show that the samples are insulator at 0 T when the amount of Mn3+ is much larger or less than the sum of Mn2+ and Mn4+; by contrast, the samples display metal to insulator transition with increasing temperature when the amount of Mn3+ is close to the sum of Mn2+ and Mn4+. These anomalous magnetotransport behaviors were analyzed in the frame of the double-exchange (DE) mechanism. |
| 语种 | 英语 ; 英语 |
| 出版者 | SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/78221]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Tan GuoTai,Chen ZhengHao,Zhang XiaoZhong. Anomalous magnetotransport in LaMn1-x Te (x) O-3[J],2010, 2010. |
| APA | Tan GuoTai,Chen ZhengHao,&Zhang XiaoZhong.(2010).Anomalous magnetotransport in LaMn1-x Te (x) O-3.. |
| MLA | Tan GuoTai,et al."Anomalous magnetotransport in LaMn1-x Te (x) O-3".(2010). |
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