Memory and aging effects in interacting sub-10 nm nanomagnets with large uniaxial anisotropy
文献类型：期刊论文
| 作者 | Zhang, KC ; Liu, BG |
| 刊名 | PHYSICS LETTERS A
 |
| 出版日期 | 2009 |
| 卷号 | 373期号:31页码:2760 |
| 关键词 | SINGLE-MOLECULE MAGNETS SPIN-GLASSES NANOPARTICLE SYSTEM MAGNETIZATION DYNAMICS PHASE DIMER MODEL |
| ISSN号 | 0375-9601 |
| 通讯作者 | Liu, BG: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The anomalous Hall effect (AHE) in quarternary Heusler-type Ni50Mn17Fe8Ga25 melt-spun ribbons is investigated. Experimental correlation between saturated anomalous Hall resistivity (rho(M)(A)(S)) and longitudinal resistivity (rho(xx)) is achieved for the low-temperature martensitic phase and the high-temperature austenitic phase as rho(M)(A)(S)infinity rho(n=4.2)(xx) and rho(M)(A)(S)infinity rho(n=2.1)(xx), respectively. The unexpectedly large exponent of n=4.2 in the martensitic phase is found to contradict the traditional theory of AHE with n=1-2, but it can be explained by a side-jump model beyond the short-range limit as a result of the intermediate-range spin-dependent electron scattering by relatively large Mn-rich clusters instead. The restoration of the exponent back to a normal value of n=2.1 in the austenitic phase is ascribed to the domination of the electron scattering by phonons, compared to that by the Mn-rich clusters, at elevated temperatures and with phonon softening in the transverse-acoustic TA(2) mode. |
| 收录类别 | SCI |
| 资助信息 | Nature Science Foundation of China [10774180]; Chinese Department of Science and Technology [2005CB623602]; Chinese Academy of Sciences [KJCX2.YW.W09-5] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41900]  |
| 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, KC,Liu, BG. Memory and aging effects in interacting sub-10 nm nanomagnets with large uniaxial anisotropy[J]. PHYSICS LETTERS A,2009,373(31):2760. |
| APA | Zhang, KC,&Liu, BG.(2009).Memory and aging effects in interacting sub-10 nm nanomagnets with large uniaxial anisotropy.PHYSICS LETTERS A,373(31),2760. |
| MLA | Zhang, KC,et al."Memory and aging effects in interacting sub-10 nm nanomagnets with large uniaxial anisotropy".PHYSICS LETTERS A 373.31(2009):2760. |
入库方式： OAI收割
来源：物理研究所
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