Critical current degradation behavior of 7-filamentary Ba 1−x K x Fe 2 As 2 tapes under uniaxial strain

122-type iron-based superconductors (IBS) have attracted extensive attention due to their excellent performance. The 100 m class Ba 1− x K x Fe 2 As 2 (Ba-122) 7-filamentary IBS tapes were successfully fabricated by the Institute of Electrical Engineering, Chinese Academy of Sciences. In this study,...

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Published in:Superconductor science & technology 2023-01, Vol.36 (1), p.15004
Main Authors: Liu, Xiao, Shi, Yi, Liu, Fang, Ma, Hongjun, Liu, Huajun, Zhou, Chao, Song, Yuntao, Gao, Jian, Zhu, Yanchang, Zhang, Xianping, Wang, Dongliang, Ma, Yanwei, Zhang, Zhan, Wei, Shaoqing, Qin, Jinggang
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cited_by cdi_FETCH-LOGICAL-c887-51b29b5e5be2da3c49a2e8cf74ea9871ba4e0313331929cc8cc26003fc1586123
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container_title Superconductor science & technology
container_volume 36
creator Liu, Xiao
Shi, Yi
Liu, Fang
Ma, Hongjun
Liu, Huajun
Zhou, Chao
Song, Yuntao
Gao, Jian
Zhu, Yanchang
Zhang, Xianping
Wang, Dongliang
Ma, Yanwei
Zhang, Zhan
Wei, Shaoqing
Qin, Jinggang
description 122-type iron-based superconductors (IBS) have attracted extensive attention due to their excellent performance. The 100 m class Ba 1− x K x Fe 2 As 2 (Ba-122) 7-filamentary IBS tapes were successfully fabricated by the Institute of Electrical Engineering, Chinese Academy of Sciences. In this study, we have performed tests of the 7-filamentary Ba-122 short tape samples (Ba s samples) and the 100 m class 7-filamentary Ba-122 tape samples (Ba 100 samples) under various kinds of strain using U-shaped bending spring devices. Both types of samples were still reversible even when the applied compressive strain reached −0.65%. In addition, the reversible tensile strain limit of the Ba s and Ba 100 samples were 0.25% and 0.28%, which increased to 0.38% and 0.41% after considering the effect of the cooling process.
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title Critical current degradation behavior of 7-filamentary Ba 1−x K x Fe 2 As 2 tapes under uniaxial strain
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