Polydispersity effects on the magnetization of diluted ferrofluids: a lognormal analysis
文献类型：期刊论文
| 作者 | Wang Xu-Fei1,2; Shi Li-Qun1,2 |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 19页码:7 |
| 关键词 | ferrofluid polydispersity effects lognormal distribution |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/19/10/107502 |
| 英文摘要 | Based on a lognormal particle size distribution, this paper makes a model analysis on the polydispersity effects on the magnetization behaviour of diluted ferrofluids. Using a modified Langevin relationship for the lognormal dispersion, it first performs reduced calculations without material parameters. From the results, it is extrapolated that for the ferrofluid of lognormal polydispersion, in comparison with the corresponding monodispersion, the saturation magnetization is enhanced higher by the particle size distribution. It also indicates that in an equivalent magnetic field, the lognormally polydispersed ferrofluid is magnetically saturated faster than the corresponding monodispersion. Along the theoretical extrapolations, the polydispersity effects are evaluated for a typical ferrofluid of magnetite, with a dispersity of sigma = 0.20. The results indicate that the lognormal polydispersity leads to a slight increase of the saturation magnetization, but a noticeable increase of the speed to reach the saturation value in an equivalent magnetic field. |
| WOS关键词 | NANOPARTICLES ; PARTICLE ; FLUIDS |
| 资助项目 | Shanghai Leading Academic Discipline Project of China[B107] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000282923600084 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | Shanghai Leading Academic Discipline Project of China |
| 源URL | [http://119.78.100.186/handle/113462/31793]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wang Xu-Fei |
| 作者单位 | 1.Fudan Univ, Appl Ion Beam Phys Lab, Key Lab, Minist Educ, Shanghai 200433, Peoples R China 2.Fudan Univ, Inst Modern Phys, Dept Nucl Sci & Technol, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Xu-Fei,Shi Li-Qun. Polydispersity effects on the magnetization of diluted ferrofluids: a lognormal analysis[J]. CHINESE PHYSICS B,2010,19:7. |
| APA | Wang Xu-Fei,&Shi Li-Qun.(2010).Polydispersity effects on the magnetization of diluted ferrofluids: a lognormal analysis.CHINESE PHYSICS B,19,7. |
| MLA | Wang Xu-Fei,et al."Polydispersity effects on the magnetization of diluted ferrofluids: a lognormal analysis".CHINESE PHYSICS B 19(2010):7. |
入库方式： OAI收割
来源：近代物理研究所
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