Bi addition effect on J(C)-B performance of powder-in-tube processed MgB2 tapes

	Bi addition effect on J(C)-B performance of powder-in-tube processed MgB2 tapes
	Ma YW(马衍伟)
刊名	IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
	2007
通讯作者	马衍伟
中文摘要	MgB2 tapes with 5 at.% Bi addition were fabricated through the in situ powder-in-tube method. Heat treatment was carried out at 700 degrees C and 800 degrees C for 1 h. The phase, microstructure, superconductivity and flux pinning ability were characterized, by XRD, SEM, magnetic and transport measurements. The critical current density J(c) and J(c)-B performance for the doped and undoped samples are also given. It is found that nano-Bi doping decreased the magnetic field sensitivity of J(c), indicating an improvement of flux pinning. At 4.2-K, 10 T, J(c) values of the Bi doped tapes enhanced about 2.5 times compared to that of undoped samples. The mechanism for improved J(c)-B performance of Bi-doped MgB2 tapes is investigated.
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	MgB2 tapes with 5 at.% Bi addition were fabricated through the in situ powder-in-tube method. Heat treatment was carried out at 700 degrees C and 800 degrees C for 1 h. The phase, microstructure, superconductivity and flux pinning ability were characterized, by XRD, SEM, magnetic and transport measurements. The critical current density J(c) and J(c)-B performance for the doped and undoped samples are also given. It is found that nano-Bi doping decreased the magnetic field sensitivity of J(c), indicating an improvement of flux pinning. At 4.2-K, 10 T, J(c) values of the Bi doped tapes enhanced about 2.5 times compared to that of undoped samples. The mechanism for improved J(c)-B performance of Bi-doped MgB2 tapes is investigated.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/419]
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. Bi addition effect on J(C)-B performance of powder-in-tube processed MgB2 tapes[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2007.
APA	马衍伟.(2007).Bi addition effect on J(C)-B performance of powder-in-tube processed MgB2 tapes.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY.
MLA	马衍伟."Bi addition effect on J(C)-B performance of powder-in-tube processed MgB2 tapes".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY (2007).