Improved flux pinning and high critical current density in Fe-sheathed MgB2 wires and tapes by carbon nanotube doping

	Improved flux pinning and high critical current density in Fe-sheathed MgB2 wires and tapes by carbon nanotube doping
	Ma YW(马衍伟)
刊名	PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
	2007
通讯作者	马衍伟
中文摘要	Carbon nanotube-doped Fe-sheathed MgB2 wires and tapes with different doping levels were fabricated by the in situ powder-in-tube method. The phases, microstructures and flux pinning were characterized by XRD, SEM/TEM, magnetic and transport-property measurements. It is found that carbon nanotubes (CNTs) doping resulted in a significant enhancement in the field dependence of critical current density J(c) for all the added wires and tapes. The J(c) in 13 T and 4.2 K for the CNTs doped tapes (optimal MgB1.9C0.1) increased by a factor of 11 compared to that of the undoped sample. The observed J(c)(B) improvement in the added samples is attributable to the enhanced flux pinning caused by the CNTs doping.
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	Carbon nanotube-doped Fe-sheathed MgB2 wires and tapes with different doping levels were fabricated by the in situ powder-in-tube method. The phases, microstructures and flux pinning were characterized by XRD, SEM/TEM, magnetic and transport-property measurements. It is found that carbon nanotubes (CNTs) doping resulted in a significant enhancement in the field dependence of critical current density J(c) for all the added wires and tapes. The J(c) in 13 T and 4.2 K for the CNTs doped tapes (optimal MgB1.9C0.1) increased by a factor of 11 compared to that of the undoped sample. The observed J(c)(B) improvement in the added samples is attributable to the enhanced flux pinning caused by the CNTs doping.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/375]
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. Improved flux pinning and high critical current density in Fe-sheathed MgB2 wires and tapes by carbon nanotube doping[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2007.
APA	马衍伟.(2007).Improved flux pinning and high critical current density in Fe-sheathed MgB2 wires and tapes by carbon nanotube doping.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS.
MLA	马衍伟."Improved flux pinning and high critical current density in Fe-sheathed MgB2 wires and tapes by carbon nanotube doping".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS (2007).