Abstract
CaKFe4As4 superconducting tapes are fabricated via different techniques to enhance grain connectivity. The critical current density, J c, increases exponentially with the Vickers hardness of the superconducting core. The J c (4.2 K, 10 T) of the hot isostatic pressed Cu/Ag-sheathed tape reaches 2.2 × 104 A cm-2, while that of the stainless steel/Ag-sheathed tapes surpasses 104 A cm-2. However, silver infiltrates from the sheath far into the center of the superconducting core and reacts with the CaKFe4As4 phase, which has significant ramifications for the transport current. We suggest that CaKFe4As4 has great potential if we can realize stable coexistence between the superconducting core and the sheath.
| Original language | English |
|---|---|
| Article number | 105014 |
| Journal | Superconductor Science and Technology |
| Volume | 32 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2019 Sep 12 |
Keywords
- CaKFeAs
- critical current density
- iron-based superconductors
- superconducting tapes
ASJC Scopus subject areas
- Ceramics and Composites
- Condensed Matter Physics
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry
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Effects of core density and impurities on the critical current density of CaKFe4As4 superconducting tapes. / Cheng, Zhe; Liu, Shifa; Dong, Chiheng; Huang, He; Li, Liu; Zhu, Yanchang; Awaji, Satoshi; Ma, Yanwei.
In: Superconductor Science and Technology, Vol. 32, No. 10, 105014, 12.09.2019.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Effects of core density and impurities on the critical current density of CaKFe4As4 superconducting tapes
AU - Cheng, Zhe
AU - Liu, Shifa
AU - Dong, Chiheng
AU - Huang, He
AU - Li, Liu
AU - Zhu, Yanchang
AU - Awaji, Satoshi
AU - Ma, Yanwei
N1 - Funding Information: Zhe Cheng Shifa Liu Chiheng Dong He Huang Liu Li Yanchang Zhu Satoshi Awaji Yanwei Ma Zhe Cheng Shifa Liu Chiheng Dong He Huang Liu Li Yanchang Zhu Satoshi Awaji Yanwei Ma Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China University of Chinese Academy of Science, Beijing, 100049, People’s Republic of China High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan Authors to whom any correspondence should be addressed. Zhe Cheng, Shifa Liu, Chiheng Dong, He Huang, Liu Li, Yanchang Zhu, Satoshi Awaji and Yanwei Ma 2019-10-01 2019-09-12 10:02:47 cgi/release: Article released bin/incoming: New from .zip Strategic Priority Research Program of Chinese Academy of Sciences XDB25000000 Bureau of Frontier Sciences and Education QYZDJ-SSW-JSC026 International Partnership Program of Chinese Academy of Science 182111KYSB20160014 GJHZ1175 National Natural Science Foundation of China https://doi.org/10.13039/501100001809 51677179 51721005 U1832213 yes CaKFe 4 As 4 superconducting tapes are fabricated via different techniques to enhance grain connectivity. The critical current density, J c , increases exponentially with the Vickers hardness of the superconducting core. The J c (4.2 K, 10 T) of the hot isostatic pressed Cu/Ag-sheathed tape reaches 2.2�נ10 4 A cm −2 , while that of the stainless steel/Ag-sheathed tapes surpasses 10 4 A cm −2 . However, silver infiltrates from the sheath far into the center of the superconducting core and reacts with the CaKFe 4 As 4 phase, which has significant ramifications for the transport current. We suggest that CaKFe 4 As 4 has great potential if we can realize stable coexistence between the superconducting core and the sheath. � 2019 IOP Publishing Ltd [1] Hosono H, Yamamoto A, Hiramatsu H and Ma Y 2018 Mater. Today 21 278–302 10.1016/j.mattod.2017.09.006 Hosono H, Yamamoto A, Hiramatsu H and Ma Y Mater. Today 1369-7021 21 2018 278 302 [2] Takahashi H, Igawa K, Arii K, Kamihara Y, Hirano M and Hosono H 2008 Nature 453 376–8 10.1038/nature06972 Takahashi H, Igawa K, Arii K, Kamihara Y, Hirano M and Hosono H Nature 453 2008 376 378 [3] Rotter M, Tegel M and Johrendt D 2008 Phys. Rev. Lett. 101 107006 10.1103/PhysRevLett.101.107006 Rotter M, Tegel M and Johrendt D Phys. Rev. Lett. 101 107006 2008 [4] Fang L et al 2012 Appl. Phys. Lett. 101 012601 10.1063/1.4731204 Fang L et al Appl. 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PY - 2019/9/12
Y1 - 2019/9/12
N2 - CaKFe4As4 superconducting tapes are fabricated via different techniques to enhance grain connectivity. The critical current density, J c, increases exponentially with the Vickers hardness of the superconducting core. The J c (4.2 K, 10 T) of the hot isostatic pressed Cu/Ag-sheathed tape reaches 2.2 × 104 A cm-2, while that of the stainless steel/Ag-sheathed tapes surpasses 104 A cm-2. However, silver infiltrates from the sheath far into the center of the superconducting core and reacts with the CaKFe4As4 phase, which has significant ramifications for the transport current. We suggest that CaKFe4As4 has great potential if we can realize stable coexistence between the superconducting core and the sheath.
AB - CaKFe4As4 superconducting tapes are fabricated via different techniques to enhance grain connectivity. The critical current density, J c, increases exponentially with the Vickers hardness of the superconducting core. The J c (4.2 K, 10 T) of the hot isostatic pressed Cu/Ag-sheathed tape reaches 2.2 × 104 A cm-2, while that of the stainless steel/Ag-sheathed tapes surpasses 104 A cm-2. However, silver infiltrates from the sheath far into the center of the superconducting core and reacts with the CaKFe4As4 phase, which has significant ramifications for the transport current. We suggest that CaKFe4As4 has great potential if we can realize stable coexistence between the superconducting core and the sheath.
KW - CaKFeAs
KW - critical current density
KW - iron-based superconductors
KW - superconducting tapes
UR - http://www.scopus.com/inward/record.url?scp=85072709126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072709126&partnerID=8YFLogxK
U2 - 10.1088/1361-6668/ab3a87
DO - 10.1088/1361-6668/ab3a87
M3 - Article
AN - SCOPUS:85072709126
VL - 32
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 10
M1 - 105014
ER -