Enhanced high-field performance in Fe-sheathed MgB2 tapes using inexpensive stearic acid additives

	Enhanced high-field performance in Fe-sheathed MgB2 tapes using inexpensive stearic acid additives
	Ma YW(马衍伟)
刊名	JOURNAL OF MATERIALS RESEARCH
	2007
通讯作者	马衍伟
中文摘要	High performance Fe-cladded MgB2 taps were prepared by the in situ powder-in-tube method utilizing very cheap stearic acid (C18H36O2) as dopants. The amount of stearic acid was varied from 0 to 30 wt%. We found that a significant enhancement of J(c), H-irr, and H-c2 in comparison with undoped samples was easily achieved. At 4.2 K, the transport J(c), for the best doped tapes (10 wt%) reached 2 x 10(4) A/cm(2) at 10 T and 3.7 x 10(3) A/cm(2) at 14 T, respectively, an order of magnitude higher than for the pure tapes. In particular, at 20 K, the irreversibility field of the 10 wt% doped tape was around 10 T, which is comparable to the upper critical field of the commercial NbTi at 4.2 K. The results demonstrate great potential of MgB2 tapes for superconducting magnets.
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	High performance Fe-cladded MgB2 taps were prepared by the in situ powder-in-tube method utilizing very cheap stearic acid (C18H36O2) as dopants. The amount of stearic acid was varied from 0 to 30 wt%. We found that a significant enhancement of J(c), H-irr, and H-c2 in comparison with undoped samples was easily achieved. At 4.2 K, the transport J(c), for the best doped tapes (10 wt%) reached 2 x 10(4) A/cm(2) at 10 T and 3.7 x 10(3) A/cm(2) at 14 T, respectively, an order of magnitude higher than for the pure tapes. In particular, at 20 K, the irreversibility field of the 10 wt% doped tape was around 10 T, which is comparable to the upper critical field of the commercial NbTi at 4.2 K. The results demonstrate great potential of MgB2 tapes for superconducting magnets.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/405]
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. Enhanced high-field performance in Fe-sheathed MgB2 tapes using inexpensive stearic acid additives[J]. JOURNAL OF MATERIALS RESEARCH,2007.
APA	马衍伟.(2007).Enhanced high-field performance in Fe-sheathed MgB2 tapes using inexpensive stearic acid additives.JOURNAL OF MATERIALS RESEARCH.
MLA	马衍伟."Enhanced high-field performance in Fe-sheathed MgB2 tapes using inexpensive stearic acid additives".JOURNAL OF MATERIALS RESEARCH (2007).