NDLI: Large critical current density in Cu/Ag composite sheathed $(Ba,K)Fe_{2}As_{2}$ tapes fabricated under ambient pressure

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Large critical current density in Cu/Ag composite sheathed $(Ba,K)Fe_{2}As_{2}$ tapes fabricated under ambient pressure

Content Provider	Scilit
Author	Li, Liu Zhang, Xianping Yao, Chao Dong, Chiheng Wang, Dongliang Xu, Zhongtang Ma, Yanwei
Copyright Year	2019
Description	Journal: Superconductor Science and Technology Due to the high upper critical field (Hc2) and small anisotropy, iron-based superconductors have great potential in high magnetic field applications. In this study, Cu/Ag composite sheathed (Ba,K)Fe2As2 (Ba-122) superconducting tapes were fabricated by an ex-situ powder-in-tube (PIT) method. Moreover, an ambient pressure sintering process was adopted aiming at reducing the manufacturing cost and fitting the mass production. However, fabricating Cu/Ag composite sheathed Ba-122 tapes with a large transport Jc by ambient pressure producing process is fairly challenging due to the absence of the over pressure. By optimizing sintering temperatures, sintering times and composition of raw materials, a transport Jc as high as 36000 A/cm2 (4.2 K, 10 T) was obtained in tapes sintered at 740 oC for 3 hours. The mechanism of the Jc improvement was systematically analyzed. This result is of great significance for the fabrication of low cost and long-length practical iron-based superconducting tapes.
Related Links	https://iopscience.iop.org/article/10.1088/1361-6668/ab0935/pdf
ISSN	09532048
e-ISSN	13616668
DOI	10.1088/1361-6668/ab0935
Journal	Superconductor Science and Technology
Issue Number	6
Volume Number	32
Language	English
Publisher	IOP Publishing
Publisher Date	2019-02-21
Access Restriction	Open
Subject Keyword	Journal: Superconductor Science and Technology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Metals and Alloys Condensed Matter Physics Electrical and Electronic Engineering

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