Density effect on critical current density and flux pinning properties of polycrystalline SmFeAsO1-xFx superconductor
文献类型:期刊论文
作者 | Ding, Y ; Sun, Y ; Zhuang, JC ; Cui, LJ ; Shi, ZX ; Sumption, MD ; Majoros, M ; Susner, MA ; Kovacs, CJ ; Li, GZ ; Collings, EW ; Ren, ZA |
刊名 | SUPERCONDUCTOR SCIENCE & TECHNOLOGY
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出版日期 | 2011 |
卷号 | 24期号:12 |
关键词 | LAYERED QUATERNARY COMPOUND YBA2CU3O7-DELTA MAGNETIZATION TEMPERATURE CRYSTALS |
ISSN号 | 0953-2048 |
通讯作者 | Ding, Y: Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China. |
中文摘要 | A series of polycrystalline SmFeAs1-xOx bulks was prepared to systematically investigate the influence of sample density on flux pinning properties. Different sample densities were achieved by controlling the pelletizing pressure. The superconducting volume fraction, the critical current densities J(cm) and the flux pinning force densities F-p were estimated from the magnetization measurements. Experimental results show that: (1) the superconducting volume fraction increases with the increasing of sample density; (2) the J(cm) values have a similar trend except for the sample with very high density due to different connectivity and pinning mechanisms, moreover, the J(cm)(B) curve develops a peak effect at approximately the same field at which the high density sample shows a kink; (3) the F-p(B) curve of the high density sample shows a low-field peak and a high-field peak at several temperatures, which can be explained by improved intergranular current, while only one peak can be observed in F-p(B) of the low density samples. Based on the scaling behaviour of flux pinning force densities, the main intragranular pinning is normal point pinning. |
收录类别 | SCI |
资助信息 | Natural Science Foundation of China; Ministry of Science and Technology of China [2011CBA00105]; Important Project [2011seuzd09]; US Department of Energy, Division of High Energy Physics [DE-FG02-95ER40900]; Scientific Research Foundation of the Graduate School of Southeast University [YBJJ0933] |
语种 | 英语 |
公开日期 | 2013-09-17 |
源URL | [http://ir.iphy.ac.cn/handle/311004/35714] ![]() |
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 | Ding, Y,Sun, Y,Zhuang, JC,et al. Density effect on critical current density and flux pinning properties of polycrystalline SmFeAsO1-xFx superconductor[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2011,24(12). |
APA | Ding, Y.,Sun, Y.,Zhuang, JC.,Cui, LJ.,Shi, ZX.,...&Ren, ZA.(2011).Density effect on critical current density and flux pinning properties of polycrystalline SmFeAsO1-xFx superconductor.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,24(12). |
MLA | Ding, Y,et al."Density effect on critical current density and flux pinning properties of polycrystalline SmFeAsO1-xFx superconductor".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 24.12(2011). |
入库方式: OAI收割
来源:物理研究所
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