High-performance Ba1-x K (x) Fe2As2 superconducting joints for persistent current operation

doi:10.1088/1361-6668/ac4ff1

	High-performance Ba1-x K (x) Fe2As2 superconducting joints for persistent current operation
	Zhu, Yanchang 1,2,4; Wang, Dongliang 1,2,4; Wang, Qiqi 3; Zhang, Zhan 3,5; Guo, Wenwen 1,2; Huang, He 1,2,4; Ma, Hongjun 3; Liu, Fang 3; Liu, Huajun 3; Ma, Yanwei 1,2,4
刊名	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
	2022-03-01
卷号	35
关键词	iron-based superconductor superconducting joint critical current ratio joint resistance
ISSN号	0953-2048
DOI	10.1088/1361-6668/ac4ff1
通讯作者	Wang, Dongliang(dongliangwang@mail.iee.ac.cn) ; Ma, Yanwei(ywma@mail.iee.ac.cn)
英文摘要	High-performance superconducting joints are the key to achieving persistent-mode magnets. Herein, the superconducting joints between Ba1-x K (x) Fe2As2 (BaK-122) superconducting tapes were prepared by a simple cold-pressing method, and the joint resistance of the iron-based superconducting joint was estimated by field-decay method for the first time. Via the scanning electron microscope (SEM), electron backscattered diffraction (EBSD), electron probe microanalysis (EPMA) and x-ray computed tomography (XCT) measurements, it is found that the joint sample CP80 shows fine performance. At 4.2 K and 10 T, a transport critical current I (c) of 105 A for the joint sample CP80 was measured, and the critical current ratio (CCR = Ijoint c/Itape c) of the joint was 94.6%. On the other hand, the joints exhibit a pretty low joint resistance of 2.7 x 10(-13) omega in self-field at 4.2 K. Among iron-based superconductors, we are the first to estimate the accurate resistance of iron-based superconducting joint by the field-decay method. All these show the great prospective to apply BaK-122 in a series of practical applications that require superconducting joints as key components.
资助项目	National Key R&D Program of China[2018YFA0704200] ; National Key R&D Program of China[2017YFE0129500] ; National Natural Science Foundation of China[51861135311] ; National Natural Science Foundation of China[U1832213] ; National Natural Science Foundation of China[51721005] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB25000000] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC026] ; International Partnership Program of Chinese Academy of Sciences[182111KYSB20160014]
WOS关键词	MICROSTRUCTURE
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000753150900001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; International Partnership Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127521]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Dongliang; Ma, Yanwei
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 4.Inst Elect Engn & Adv Electromagnet Drive Technol, Jinan 250013, Peoples R China 5.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Yanchang,Wang, Dongliang,Wang, Qiqi,et al. High-performance Ba1-x K (x) Fe2As2 superconducting joints for persistent current operation[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2022,35.
APA	Zhu, Yanchang.,Wang, Dongliang.,Wang, Qiqi.,Zhang, Zhan.,Guo, Wenwen.,...&Ma, Yanwei.(2022).High-performance Ba1-x K (x) Fe2As2 superconducting joints for persistent current operation.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,35.
MLA	Zhu, Yanchang,et al."High-performance Ba1-x K (x) Fe2As2 superconducting joints for persistent current operation".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 35(2022).