Origin of the constricted hysteresis loop in cobalt ferrites revisited
文献类型：期刊论文
| 作者 | Zhang, HG ; Zhang, YJ ; Wang, WH ; Wu, GH |
| 刊名 | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
 |
| 出版日期 | 2011 |
| 卷号 | 323期号:15页码:1980 |
| 关键词 | BATIO3-COFE2O4 NANOSTRUCTURES TEMPERATURE-DEPENDENCE UNIAXIAL ANISOTROPY SENSOR APPLICATIONS COMPOSITES NANOCRYSTALS NICKEL |
| ISSN号 | 0304-8853 |
| 通讯作者 | Wang, WH (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China. |
| 中文摘要 | The magnetoresistance (MR){=[R(H) - R(0)]/R(0)} properties in ferromagnetic shape memory alloy of NiMnFeGa ribbons and single crystals, and NiFeGa ribbons have been investigated. It is found that the NiMnFeGa melt-spun ribbon exhibited GMR effect, arising from the spin-dependent scattering from magnetic inhomogeneities consisting of antiferromagnetically coupled Mn atoms in B2 structure. In the absence of these magnetic inhomogeneities, Heusler alloys seem to show a common linear MR behavior at around 0.8T(C), regardless of sample structures. This may be explained by the s-d model. At low temperatures, conventional AMR behaviors due to the spin-orbital coupling are observed. This is most likely due to the diminished MR from s-d model because of much less spin fluctuation, and is not associated with martensite phase. MR anomaly at intermediate field (rho(perpendicular to) > rho(parallel to)) is also observed in single crystal samples, which may be related to unique features of Heusler alloys. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program (973 Program) [2009CB929501]; Beijing Municipal Commission of Education |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50483]  |
| 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, HG,Zhang, YJ,Wang, WH,et al. Origin of the constricted hysteresis loop in cobalt ferrites revisited[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2011,323(15):1980. |
| APA | Zhang, HG,Zhang, YJ,Wang, WH,&Wu, GH.(2011).Origin of the constricted hysteresis loop in cobalt ferrites revisited.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,323(15),1980. |
| MLA | Zhang, HG,et al."Origin of the constricted hysteresis loop in cobalt ferrites revisited".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 323.15(2011):1980. |
入库方式： OAI收割
来源：物理研究所
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