Strongly enhanced current-carrying performance in MgB2 tape conductors by C-60 doping

	Strongly enhanced current-carrying performance in MgB2 tape conductors by C-60 doping
	Ma YW(马衍伟)
刊名	JOURNAL OF APPLIED PHYSICS
	2008
通讯作者	马衍伟
中文摘要	By utilizing C-60 as a viable alternative dopant, we demonstrate a simple and industrially scalable route that yields a 10 similar to 15-fold improvement in the in-high-field current densities of MgB2 tape conductors. For example, a J(c) value higher than 4x10(4) A/cm(2) (4.2 K, 10 T), which exceeds that for NbTi superconductor, can be realized on the C-60 doped MgB2 tapes. It is worth noting that this value is even higher than that fabricated using strict high energy ball milling technique under Ar atmosphere. At 20 K, H-irr was similar to 10 T for C-60 doped MgB2 tapes. A large amount of nanometer-sized precipitates and grain boundaries were found in MgB2 matrix. The special physical and chemical characteristics of C-60, in addition to its C containing intrinsic essence, are a key point in enhancing the superconducting performance of MgB2 tapes.
学科主题	材料合成与加工工艺
收录类别	1
公开日期	2010-09-29
附注	By utilizing C-60 as a viable alternative dopant, we demonstrate a simple and industrially scalable route that yields a 10 similar to 15-fold improvement in the in-high-field current densities of MgB2 tape conductors. For example, a J(c) value higher than 4x10(4) A/cm(2) (4.2 K, 10 T), which exceeds that for NbTi superconductor, can be realized on the C-60 doped MgB2 tapes. It is worth noting that this value is even higher than that fabricated using strict high energy ball milling technique under Ar atmosphere. At 20 K, H-irr was similar to 10 T for C-60 doped MgB2 tapes. A large amount of nanometer-sized precipitates and grain boundaries were found in MgB2 matrix. The special physical and chemical characteristics of C-60, in addition to its C containing intrinsic essence, are a key point in enhancing the superconducting performance of MgB2 tapes.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/321]
专题	电工研究所_超导材料及强磁场科学研究组_超导材料及强磁场科学研究组_期刊论文
推荐引用方式 GB/T 7714	Ma YW. Strongly enhanced current-carrying performance in MgB2 tape conductors by C-60 doping[J]. JOURNAL OF APPLIED PHYSICS,2008.
APA	马衍伟.(2008).Strongly enhanced current-carrying performance in MgB2 tape conductors by C-60 doping.JOURNAL OF APPLIED PHYSICS.
MLA	马衍伟."Strongly enhanced current-carrying performance in MgB2 tape conductors by C-60 doping".JOURNAL OF APPLIED PHYSICS (2008).