Anomalous positive magnetoresistance in Fe0.75Mn1.35As
文献类型：期刊论文
| 作者 | N. K. Sun ; Y. B. Li ; D. Li ; Q. Zhang ; W. J. Feng ; Z. D. Zhang |
| 刊名 | Physical Review B
 |
| 出版日期 | 2006 |
| 卷号 | 74期号:17 |
| 关键词 | negative magnetoresistance giant magnetoresistance magnetic transition phase-transition metals mn2as |
| ISSN号 | 1098-0121 |
| 中文摘要 | With increasing temperature, tetragonal Fe0.75Mn1.35As compound exhibits a first-order phase transition at T-s=165 K from a ferrimagnetic (FI) phase with a large unit-cell volume to an antiferromagnetic (AF) phase with a small unit-cell volume. An external magnetic field induces a metamagnetic transition from the AF to the FI state above T-s, stabilizing the phase with the larger cell volume. With increasing the number of warming and cooling cycles, the resistivity curve, rho(T), shifts to higher values, and this shift is ascribed to a pronounced reduction of the mean-free path of electron scattering. After several thermocycles, a large, irreversible lattice expansion of c axis of 0.18% occurs. The positive magnetoresistance ratios as large as 12% and 6% for the first magnetic-field cycles are observed at 170 and 167 K, respectively, at 5 T. The overall magnetotransport behaviors on the subsequently second and third magnetic-field cycles at 170 K are similar to that in the first magnetic-field cycle, but with MR ratios of only 1.6% and 0.6%, respectively, at 5 T. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34475]  |
| 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 | N. K. Sun,Y. B. Li,D. Li,et al. Anomalous positive magnetoresistance in Fe0.75Mn1.35As[J]. Physical Review B,2006,74(17). |
| APA | N. K. Sun,Y. B. Li,D. Li,Q. Zhang,W. J. Feng,&Z. D. Zhang.(2006).Anomalous positive magnetoresistance in Fe0.75Mn1.35As.Physical Review B,74(17). |
| MLA | N. K. Sun,et al."Anomalous positive magnetoresistance in Fe0.75Mn1.35As".Physical Review B 74.17(2006). |
入库方式： OAI收割
来源：金属研究所
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