Abnormal magnetoresistance in epsilon-(Mn1-xFex)(3.25)Ge antiferromagnets
文献类型：期刊论文
| 作者 | Du, Juan; Li, Da; Li, Yao-Biao; Sun, Nai-Kun; Li, Ji; Zhang, Zhi-Dong |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 76期号:9页码:5 |
| ISSN号 | 1098-0121 |
| DOI | 10.1103/PhysRevB.76.094401 |
| 通讯作者 | Du, Juan() |
| 英文摘要 | The magnetic, transport and magnetotransport properties of antiferromagnetic epsilon-(Mn1-xFex)(3.25)Ge (x=0.17 and 0.2) compounds are investigated systematically. For both compounds, a large positive magnetoresistance (MR) is observed in the temperature regime below the temperature (T-t) for a transition from a triangular to a collinear antiferromagnetic spin configuration, while a negative magnetoresistance appears between T-t and the Neel temperature T-N, and then the MR ratio turns to be positive again above T-N. Below T-t, the positive MR reaches a maximum ratio of 6.1% at 5 K at an applied magnetic field of 5 T for the epsilon-(Mn0.83Fe0.17)(3.25)Ge compound. For the epsilon-(Mn0.83Fe0.2)(3.25)Ge compound, the positive MR ratio reaches its maximum at 120 K and nearly vanishes at 5 K. The origin of the anomalous positive and negative MR effects is discussed in terms of the shrinkage of the orbits, the spin fluctuations, the spin configurations, and the magnetic transitions. |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000249786100047 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://ir.imr.ac.cn/handle/321006/90717]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Du, Juan |
| 作者单位 | 1.Chinese Acad Sci, Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Juan,Li, Da,Li, Yao-Biao,et al. Abnormal magnetoresistance in epsilon-(Mn1-xFex)(3.25)Ge antiferromagnets[J]. PHYSICAL REVIEW B,2007,76(9):5. |
| APA | Du, Juan,Li, Da,Li, Yao-Biao,Sun, Nai-Kun,Li, Ji,&Zhang, Zhi-Dong.(2007).Abnormal magnetoresistance in epsilon-(Mn1-xFex)(3.25)Ge antiferromagnets.PHYSICAL REVIEW B,76(9),5. |
| MLA | Du, Juan,et al."Abnormal magnetoresistance in epsilon-(Mn1-xFex)(3.25)Ge antiferromagnets".PHYSICAL REVIEW B 76.9(2007):5. |
入库方式： OAI收割
来源：金属研究所
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