In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 60, No. 12 ( 2021-12-01), p. 123004-
Abstract:
A new in situ process for depositing MgB 2 film is being developed in the present study as a candidate method to facilitate the mass production of MgB 2 -thin-film superconducting tapes. Here, a MgB 2 film was synthesized on a heated copper substrate via “hybrid deposition,” comprising thermal evaporation of magnesium and sputtering of boron. High-temperature post-annealing was performed to increase the critical current density ( J c ) of the MgB 2 thin films obtained via hybrid deposition. The J c of the MgB 2 film deposited at 360 °C by hybrid deposition and post-annealed at 430 °C was drastically improved to 1100 A mm −2 at 20 K under 4 T, 79 000 A mm −2 at 15 K under 3 T, and 59 000 A mm −2 at 10 K under 5 T under a magnetic field parallel to the film. It was expected that the incorporation of hybrid deposition in processing using a reel-to-reel machine would facilitate the synthesis of high- J c , long MgB 2 -thin-film superconducting wires.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.35848/1347-4065/ac38fa
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2021
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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