The effect of ZrSi2 and SiC doping on the microstructure and J(c)-B properties of PIT processed MgB2 tapes

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	The effect of ZrSi2 and SiC doping on the microstructure and J(c)-B properties of PIT processed MgB2 tapes
	Ma, YW ; Zhang, XP ; Xu, AX ; Li, XH ; Xiao, LY ; Nishijima, G ; Awaji, S ; Watanabe, K ; Jiao, YL ; Xiao, L ; Bai, XD ; Wu, KH ; Wen, HH
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	2006
卷号	19 期号:1 页码:133
关键词	CRITICAL-CURRENT DENSITY IRREVERSIBILITY FIELD SUPERCONDUCTIVITY WIRES WSI2
ISSN号	0953-2048
通讯作者	Ma, YW (reprint author), Chinese Acad Sci, Inst Elect Engn, Appl Superconduct Lab, POB 2703, Beijing 100080, Peoples R China.
中文摘要	We investigated the effect of ZrSi2 and SiC doping on the microstructure, critical current density J(c) and flux pinning of Fe-sheathed MgB2 tapes prepared by the in situ powder-in-tube method. Heat treatment was performed at a low temperature of 650 degrees C for 1 h. The phases, microstructure and flux pinning were characterized by means of x-ray diffraction, scanning electron microscope, magnetic and transport property measurements. It was found that the tapes doped with nanoscale SiC had the best pinning performance, while the ZrSi2 powder showed a similar improved field dependence of J(c) compared with undoped samples. J(c) values for the SiC doped samples were enhanced by two orders of magnitude at 4.2 K in magnetic fields above 8 T. At 4.2 K and 10 T, the J(c) reached similar to 1.5 x 10(4) A cm(-2). Moreover, the critical temperature for the doped tapes decreased slightly ( < 1.2 K). Microstructural analysis shows that very good grain connections or/and grain refinement were obtained for the doped tapes. The mechanism of the enhancement of the flux pinning is also discussed.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/45079]
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,Xu, AX,et al. The effect of ZrSi2 and SiC doping on the microstructure and J(c)-B properties of PIT processed MgB2 tapes[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2006,19(1):133.
APA	Ma, YW.,Zhang, XP.,Xu, AX.,Li, XH.,Xiao, LY.,...&Wen, HH.(2006).The effect of ZrSi2 and SiC doping on the microstructure and J(c)-B properties of PIT processed MgB2 tapes.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,19(1),133.
MLA	Ma, YW,et al."The effect of ZrSi2 and SiC doping on the microstructure and J(c)-B properties of PIT processed MgB2 tapes".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 19.1(2006):133.