Granularity and vortex dynamics in LaFeAsO0.92F0.08 probed by harmonics of the ac magnetic susceptibility
文献类型：期刊论文
| 作者 | Polichetti, M ; Adesso, MG ; Zola, D ; Luo, JL ; Chen, GF ; Li, Z ; Wang, NL ; Noce, C ; Pace, S |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2008 |
| 卷号 | 78期号:22 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTORS ZRCUSIAS TYPE-STRUCTURE DEPENDENCE CURVES FILMS FIELD |
| ISSN号 | 1098-0121 |
| 通讯作者 | Polichetti, M: INFM, Lab Reg SuperMat, CNR, Via S Allende, I-84081 Baronissi, SA, Italy. |
| 中文摘要 | Fundamental and higher harmonics of the ac magnetic susceptibility have been measured on LaFeAsO0.92F0.08 samples as a function of the temperature, at various amplitudes and frequencies of the ac magnetic field, with a small superimposed dc field parallel to the ac field. The granularity of the samples has been investigated and the intergrain and intragrain contributions have been clearly individuated looking at both the first and the third harmonics. The vortex dynamics has been also analyzed, and a comparison with the magnetic behavior of both the MgB2 and the cuprate superconductors has been performed. Some vortex dissipative phenomena, i.e., the thermally activated flux flow and the flux creep, have been detected in the presented experimental data, similar to what have been obtained on YBCO. Nevertheless, although the general behavior is similar, several differences have been also evidenced between these different classes of superconductors, mainly in the third harmonics. We infer that different vortex dynamics has to be included into the analysis of the magnetic response in this iron-based material. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38814]  |
| 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 | Polichetti, M,Adesso, MG,Zola, D,et al. Granularity and vortex dynamics in LaFeAsO0.92F0.08 probed by harmonics of the ac magnetic susceptibility[J]. PHYSICAL REVIEW B,2008,78(22). |
| APA | Polichetti, M.,Adesso, MG.,Zola, D.,Luo, JL.,Chen, GF.,...&Pace, S.(2008).Granularity and vortex dynamics in LaFeAsO0.92F0.08 probed by harmonics of the ac magnetic susceptibility.PHYSICAL REVIEW B,78(22). |
| MLA | Polichetti, M,et al."Granularity and vortex dynamics in LaFeAsO0.92F0.08 probed by harmonics of the ac magnetic susceptibility".PHYSICAL REVIEW B 78.22(2008). |
入库方式： OAI收割
来源：物理研究所
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