Observation of reversible critical current performance under large compressive strain in Sr0.6K0.4Fe2As2 tapes

F. Liu, C. Yao, H. Liu, C. Dai, J. Qin, L. Ci, Z Mao, C. Zhou, Y. Shi, H. Jin, D. Wang, Y. Ma

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

Iron-based superconductors have caused great interest regarding high-field applications due to their good properties. A common fabrication route for 122-type wires and tapes is the ex situ powder-in-tube (PIT) process. From the point of application in the high magnetic field, where high electromagnetic forces are present, the conductor strength and its tolerance to the mechanical load are important issues. In order to understand the comparatively integrated critical current characterization of the Sr-122 tape under axial strain, the so-called U-spring setup was used to test a silver-sheathed Sr0.6K0.4Fe2As2 tape sample with a single core over a wide range of applied axial strain (-0.6% ∼ 0.3%). It was found that when the sample was compressed, the critical current performance showed reversiblity; meanwhile the irreversible tensile strain limit was quite low. The Sr-122/Ag tape shows very good performance under compression, and a possible conductor design should be considered to make the superconductor work at proper compressive strain states for future applications.

Original languageEnglish
Article number07LT01
JournalSuperconductor science and technology
Volume30
Issue number7
DOIs
Publication statusPublished - 25 May 2017

Fingerprint

Critical currents
Tapes
tapes
critical current
axial strain
conductors
Tensile strain
Silver
Powders
Superconducting materials
Compaction
silver
routes
wire
Wire
Magnetic fields
electromagnetism
tubes
iron
Fabrication

Keywords

  • Critical current
  • Sr-122
  • SrKFeAs
  • Strain

Cite this

Liu, F. ; Yao, C. ; Liu, H. ; Dai, C. ; Qin, J. ; Ci, L. ; Mao, Z ; Zhou, C. ; Shi, Y. ; Jin, H. ; Wang, D. ; Ma, Y. / Observation of reversible critical current performance under large compressive strain in Sr0.6K0.4Fe2As2 tapes. In: Superconductor science and technology. 2017 ; Vol. 30, No. 7.
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Observation of reversible critical current performance under large compressive strain in Sr0.6K0.4Fe2As2 tapes. / Liu, F.; Yao, C.; Liu, H.; Dai, C.; Qin, J.; Ci, L.; Mao, Z; Zhou, C.; Shi, Y.; Jin, H.; Wang, D.; Ma, Y.

In: Superconductor science and technology, Vol. 30, No. 7, 07LT01, 25.05.2017.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Observation of reversible critical current performance under large compressive strain in Sr0.6K0.4Fe2As2 tapes

AU - Liu, F.

AU - Yao, C.

AU - Liu, H.

AU - Dai, C.

AU - Qin, J.

AU - Ci, L.

AU - Mao, Z

AU - Zhou, C.

AU - Shi, Y.

AU - Jin, H.

AU - Wang, D.

AU - Ma, Y.

PY - 2017/5/25

Y1 - 2017/5/25

N2 - Iron-based superconductors have caused great interest regarding high-field applications due to their good properties. A common fabrication route for 122-type wires and tapes is the ex situ powder-in-tube (PIT) process. From the point of application in the high magnetic field, where high electromagnetic forces are present, the conductor strength and its tolerance to the mechanical load are important issues. In order to understand the comparatively integrated critical current characterization of the Sr-122 tape under axial strain, the so-called U-spring setup was used to test a silver-sheathed Sr0.6K0.4Fe2As2 tape sample with a single core over a wide range of applied axial strain (-0.6% ∼ 0.3%). It was found that when the sample was compressed, the critical current performance showed reversiblity; meanwhile the irreversible tensile strain limit was quite low. The Sr-122/Ag tape shows very good performance under compression, and a possible conductor design should be considered to make the superconductor work at proper compressive strain states for future applications.

AB - Iron-based superconductors have caused great interest regarding high-field applications due to their good properties. A common fabrication route for 122-type wires and tapes is the ex situ powder-in-tube (PIT) process. From the point of application in the high magnetic field, where high electromagnetic forces are present, the conductor strength and its tolerance to the mechanical load are important issues. In order to understand the comparatively integrated critical current characterization of the Sr-122 tape under axial strain, the so-called U-spring setup was used to test a silver-sheathed Sr0.6K0.4Fe2As2 tape sample with a single core over a wide range of applied axial strain (-0.6% ∼ 0.3%). It was found that when the sample was compressed, the critical current performance showed reversiblity; meanwhile the irreversible tensile strain limit was quite low. The Sr-122/Ag tape shows very good performance under compression, and a possible conductor design should be considered to make the superconductor work at proper compressive strain states for future applications.

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