Determining themagnetic attempt time tau(0), its temperature dependence, and the grain size distribution from magnetic viscosity measurements
文献类型：期刊论文
| 作者 | Berndt, Thomas1; Muxworthy, Adrian R.1; Paterson, Greig A.2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 120期号:11页码:7322-7336 |
| DOI | 10.1002/2015JB012283 |
| 文献子类 | Article |
| 英文摘要 | A new method to determine the atomic attempt time.. 0 of magnetic relaxation of fine particles, which is central to rock and soil magnetism and paleomagnetic recording theory, is presented, including the determination of its temperature dependence, and simultaneously the grain size distribution of a sample. It is based on measuring a series of zero-field magnetic viscous decay curves for saturation isothermal remanent magnetization at various different temperatures that are later joined together on a single grain size scale from which the grain size distribution and attempt time are determined. The attempt time was determined for three samples containing noninteracting, single-domain titanomagnetites of different grain sizes for temperatures between 27 K and 374 K. No clear temperature-dependent trend was found; however, values varied significantly from one sample to the other: from 10(-11) to 10(-8)s; in particular, the sample containing multiple magnetic phases had an effective attempt time significantly lower than the more homogeneous samples, thereby questioning the applicability of the simple Neel-Arhennius equation for magnetic relaxation for composite materials. |
| WOS关键词 | MICROCRYSTALS ; PARTICLES ; SYSTEMS ; NEVADA |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000368437800004 |
| 资助机构 | IRM Visiting Research Fellowship by National Science Foundation ; IRM Visiting Research Fellowship by National Science Foundation ; W. M. Keck Foundation ; W. M. Keck Foundation ; University of Minnesota ; University of Minnesota ; IRM Visiting Research Fellowship by National Science Foundation ; IRM Visiting Research Fellowship by National Science Foundation ; W. M. Keck Foundation ; W. M. Keck Foundation ; University of Minnesota ; University of Minnesota |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62094]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 作者单位 | 1.Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, London, England 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Berndt, Thomas,Muxworthy, Adrian R.,Paterson, Greig A.. Determining themagnetic attempt time tau(0), its temperature dependence, and the grain size distribution from magnetic viscosity measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2015,120(11):7322-7336. |
| APA | Berndt, Thomas,Muxworthy, Adrian R.,&Paterson, Greig A..(2015).Determining themagnetic attempt time tau(0), its temperature dependence, and the grain size distribution from magnetic viscosity measurements.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,120(11),7322-7336. |
| MLA | Berndt, Thomas,et al."Determining themagnetic attempt time tau(0), its temperature dependence, and the grain size distribution from magnetic viscosity measurements".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 120.11(2015):7322-7336. |
入库方式： OAI收割
来源：地质与地球物理研究所
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