The doping effect of activated carbon on the superconducting properties of MgB2 tapes

	The doping effect of activated carbon on the superconducting properties of MgB2 tapes
	Ma YW(马衍伟)
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	2008
通讯作者	马衍伟
中文摘要	Activated carbon doped MgB2 tapes were prepared by the in situ powder-in-tube method. The phase, crystal structure, microstructure, resistance, etc were analyzed by x-ray diffraction (XRD), scanning electron microscopy (SEM) and a physical properties measurement system (PPMS). It was found that the irreversibility field (H-irr) and upper critical field (H-c2) were enhanced when MgB2 samples were doped with activated carbon, and the magnetic field dependence of the critical current density (J(c)) was improved significantly. For the 5% activated carbon doped MgB2 tapes, the J(c) value was nearly eight times higher than that of undoped tapes at 13 T (4.2 K). On the other hand, the activated carbon doping level has a significant effect on the J(c) values of MgB2 tapes. When the doping level is higher than 5%, the J(c) values decrease with increasing activated carbon doping level.
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	Activated carbon doped MgB2 tapes were prepared by the in situ powder-in-tube method. The phase, crystal structure, microstructure, resistance, etc were analyzed by x-ray diffraction (XRD), scanning electron microscopy (SEM) and a physical properties measurement system (PPMS). It was found that the irreversibility field (H-irr) and upper critical field (H-c2) were enhanced when MgB2 samples were doped with activated carbon, and the magnetic field dependence of the critical current density (J(c)) was improved significantly. For the 5% activated carbon doped MgB2 tapes, the J(c) value was nearly eight times higher than that of undoped tapes at 13 T (4.2 K). On the other hand, the activated carbon doping level has a significant effect on the J(c) values of MgB2 tapes. When the doping level is higher than 5%, the J(c) values decrease with increasing activated carbon doping level.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/275]
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. The doping effect of activated carbon on the superconducting properties of MgB2 tapes[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2008.
APA	马衍伟.(2008).The doping effect of activated carbon on the superconducting properties of MgB2 tapes.SUPERCONDUCTOR SCIENCE & TECHNOLOGY.
MLA	马衍伟."The doping effect of activated carbon on the superconducting properties of MgB2 tapes".SUPERCONDUCTOR SCIENCE & TECHNOLOGY (2008).