Fabrication and superconducting properties of nano-SiC doped MgB2 tapes

	Fabrication and superconducting properties of nano-SiC doped MgB2 tapes
	Ma YW(马衍伟)
刊名	CHINESE SCIENCE BULLETIN
	2007
通讯作者	马衍伟
中文摘要	Nano-SiC doped MgB2 tapes were prepared by the in situ powder-in-tube method. Heat treatment was performed at 650 degrees C for 1 h. XRD data indicate that SiC particles had reacted with the MgB2 during sintering process. MgB2 core seemed to be denser after SiC doping, and the critical temperature was slightly depressed. The critical current density J(c) of the SiC doped tapes was significantly enhanced in magnetic fields up to 14 T compared to the undoped ones. For the 5% SiC doped samples, J(c) was increased by a factor of 32 at 4.2 K, 10 T. The enhancement of J(c)-B properties in SiC doped MgB2 tapes is considered to be due to the enhancement of grain linkages and the introduction of effective flux pining centers. The substitution of B by C in MgB2 grains is thought to be the main reason for the improvement of the flux pinning ability in SiC doped 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	Nano-SiC doped MgB2 tapes were prepared by the in situ powder-in-tube method. Heat treatment was performed at 650 degrees C for 1 h. XRD data indicate that SiC particles had reacted with the MgB2 during sintering process. MgB2 core seemed to be denser after SiC doping, and the critical temperature was slightly depressed. The critical current density J(c) of the SiC doped tapes was significantly enhanced in magnetic fields up to 14 T compared to the undoped ones. For the 5% SiC doped samples, J(c) was increased by a factor of 32 at 4.2 K, 10 T. The enhancement of J(c)-B properties in SiC doped MgB2 tapes is considered to be due to the enhancement of grain linkages and the introduction of effective flux pining centers. The substitution of B by C in MgB2 grains is thought to be the main reason for the improvement of the flux pinning ability in SiC doped MgB2 tapes.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/387]
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. Fabrication and superconducting properties of nano-SiC doped MgB2 tapes[J]. CHINESE SCIENCE BULLETIN,2007.
APA	马衍伟.(2007).Fabrication and superconducting properties of nano-SiC doped MgB2 tapes.CHINESE SCIENCE BULLETIN.
MLA	马衍伟."Fabrication and superconducting properties of nano-SiC doped MgB2 tapes".CHINESE SCIENCE BULLETIN (2007).