Effect of annealing high-dose heavy-ion irradiated high-temperature superconductor wires
(2017) In Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 409. p.351-355- Abstract
Heavy-ion irradiation of high-temperature superconducting thin films has long been known to generate damage tracks of amorphized material that are of close-to-ideal dimension to effectively contribute to pinning of magnetic flux lines and thereby enhance the in-field critical current. At the same time, though, the presence of these tracks reduces the superconducting volume fraction available to transport current while the irradiation process itself generates oxygen depletion and disorder in the remaining superconducting material. We have irradiated commercially available superconducting coated conductors consisting of a thick film of (Y,Dy)Ba2Cu3O7 deposited on a buffered metal tape substrate in a... (More)
Heavy-ion irradiation of high-temperature superconducting thin films has long been known to generate damage tracks of amorphized material that are of close-to-ideal dimension to effectively contribute to pinning of magnetic flux lines and thereby enhance the in-field critical current. At the same time, though, the presence of these tracks reduces the superconducting volume fraction available to transport current while the irradiation process itself generates oxygen depletion and disorder in the remaining superconducting material. We have irradiated commercially available superconducting coated conductors consisting of a thick film of (Y,Dy)Ba2Cu3O7 deposited on a buffered metal tape substrate in a continuous reel-to-reel process. Irradiation was by 185 MeV 197Au ions. A high fluence of 3 × 1011 ions/cm2 was chosen to emphasize the detrimental effects. The critical current was reduced following this irradiation, but annealing at relatively low temperatures of 200 °C and 400 °C substantially restore the critical current of the irradiated material. At high fields and high temperatures there is a net benefit of critical current compared to the untreated material.
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- author
- Strickland, N. M. ; Wimbush, S. C. ; Kluth, P. ; Mota-Santiago, P. LU ; Ridgway, M. C. ; Kennedy, J. V. and Long, N. J.
- publishing date
- 2017-10-15
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Critical current, Flux pinning, Ion irradiation, Superconductor, YBCO
- in
- Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
- volume
- 409
- pages
- 5 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85009809676
- ISSN
- 0168-583X
- DOI
- 10.1016/j.nimb.2017.01.015
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2017 Elsevier B.V.
- id
- 2fd71d55-249f-4b40-b459-853bf420ea34
- date added to LUP
- 2023-04-05 16:17:54
- date last changed
- 2023-08-24 13:44:08
@article{2fd71d55-249f-4b40-b459-853bf420ea34,
abstract = {{<p>Heavy-ion irradiation of high-temperature superconducting thin films has long been known to generate damage tracks of amorphized material that are of close-to-ideal dimension to effectively contribute to pinning of magnetic flux lines and thereby enhance the in-field critical current. At the same time, though, the presence of these tracks reduces the superconducting volume fraction available to transport current while the irradiation process itself generates oxygen depletion and disorder in the remaining superconducting material. We have irradiated commercially available superconducting coated conductors consisting of a thick film of (Y,Dy)Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> deposited on a buffered metal tape substrate in a continuous reel-to-reel process. Irradiation was by 185 MeV <sup>197</sup>Au ions. A high fluence of 3 × 10<sup>11</sup> ions/cm<sup>2</sup> was chosen to emphasize the detrimental effects. The critical current was reduced following this irradiation, but annealing at relatively low temperatures of 200 °C and 400 °C substantially restore the critical current of the irradiated material. At high fields and high temperatures there is a net benefit of critical current compared to the untreated material.</p>}},
author = {{Strickland, N. M. and Wimbush, S. C. and Kluth, P. and Mota-Santiago, P. and Ridgway, M. C. and Kennedy, J. V. and Long, N. J.}},
issn = {{0168-583X}},
keywords = {{Critical current; Flux pinning; Ion irradiation; Superconductor; YBCO}},
language = {{eng}},
month = {{10}},
pages = {{351--355}},
publisher = {{Elsevier}},
series = {{Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms}},
title = {{Effect of annealing high-dose heavy-ion irradiated high-temperature superconductor wires}},
url = {{http://dx.doi.org/10.1016/j.nimb.2017.01.015}},
doi = {{10.1016/j.nimb.2017.01.015}},
volume = {{409}},
year = {{2017}},
}