Abnormal magnetoresistance in epsilon-(Mn(1-x)Fe(x))(3.25)Ge antiferromagnets
文献类型：期刊论文
| 作者 | J. Du ; D. Li ; Y. B. Li ; N. K. Sun ; J. Li ; Z. D. Zhang |
| 刊名 | Physical Review B
 |
| 出版日期 | 2007 |
| 卷号 | 76期号:9 |
| 关键词 | positive giant magnetoresistance spin-orbit manganese superlattices multilayer transition conduction exchange systems |
| ISSN号 | 1098-0121 |
| 中文摘要 | The magnetic, transport and magnetotransport properties of antiferromagnetic epsilon-(Mn(1-x)Fe(x))(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-(Mn(0.83)Fe(0.17))(3.25)Ge compound. For the epsilon-(Mn(0.83)Fe(0.2))(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. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33501]  |
| 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 | J. Du,D. Li,Y. B. Li,et al. Abnormal magnetoresistance in epsilon-(Mn(1-x)Fe(x))(3.25)Ge antiferromagnets[J]. Physical Review B,2007,76(9). |
| APA | J. Du,D. Li,Y. B. Li,N. K. Sun,J. Li,&Z. D. Zhang.(2007).Abnormal magnetoresistance in epsilon-(Mn(1-x)Fe(x))(3.25)Ge antiferromagnets.Physical Review B,76(9). |
| MLA | J. Du,et al."Abnormal magnetoresistance in epsilon-(Mn(1-x)Fe(x))(3.25)Ge antiferromagnets".Physical Review B 76.9(2007). |
入库方式： OAI收割
来源：金属研究所
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