Significantly enhanced critical current densities in MgB2 tapes made by a scaleable nanocarbon addition route

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	Significantly enhanced critical current densities in MgB2 tapes made by a scaleable nanocarbon addition route
	Ma, YW ; Zhang, XP ; Nishijima, G ; Watanabe, K ; Awaji, S ; Bai, XD
刊名	APPLIED PHYSICS LETTERS
	2006
卷号	88 期号:7
关键词	MAGNESIUM DIBORIDE SUPERCONDUCTOR WIRES FIELD
ISSN号	0003-6951
通讯作者	Ma, YW (reprint author), Chinese Acad Sci, Appl Superconduct Lab, Inst Elect Engn, PO 2703, Beijing 100080, Peoples R China.
中文摘要	Nanocarbon-doped Fe-sheathed MgB2 tapes with different doping levels were prepared by the in situ powder-in-tube method. Compared to the undoped tapes, J(c) for all the C-doped samples was enhanced by more than an order of magnitude in magnetic fields above 9 T. At 4.2 K, the transport J(c) for the 5 at. % doped tapes reached 1.85x10(4) A/cm(2) at 10 T and 2.8x10(3) A/cm(2) at 14 T, respectively. Moreover, the critical temperature for the doped tapes decreased slightly. Transmission electron microscopy showed a number of intragranular dislocations and the dispersed nanoparticles embedded within MgB2 grains induced by the C doping. The mechanism for the enhancement of flux pinning is also discussed. These results indicate that powder-in-tube-processed MgB2 tape is very promising for high-field applications.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52549]
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	Ma, YW,Zhang, XP,Nishijima, G,et al. Significantly enhanced critical current densities in MgB2 tapes made by a scaleable nanocarbon addition route[J]. APPLIED PHYSICS LETTERS,2006,88(7).
APA	Ma, YW,Zhang, XP,Nishijima, G,Watanabe, K,Awaji, S,&Bai, XD.(2006).Significantly enhanced critical current densities in MgB2 tapes made by a scaleable nanocarbon addition route.APPLIED PHYSICS LETTERS,88(7).
MLA	Ma, YW,et al."Significantly enhanced critical current densities in MgB2 tapes made by a scaleable nanocarbon addition route".APPLIED PHYSICS LETTERS 88.7(2006).