Effect of annealing high-dose heavy-ion irradiated high-temperature superconductor wires. Strickland, N. M., Wimbush, S. C., Kluth, P., Mota-Santiago, P., Ridgway, M. C., Kennedy, J. V., & Long, N. J. Nucl. Instrum. Methods Phys. Res. B, 409:351–355, October, 2017.
Paper doi abstract bibtex 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$_{\textrm{2}}$Cu$_{\textrm{3}}$O$_{\textrm{7}}$ deposited on a buffered metal tape substrate in a continuous reel-toreel process. Irradiation was by 185 MeV $^{\textrm{197}}$Au ions. A high fluence of 3 × 10$^{\textrm{11}}$ ions/cm$^{\textrm{2}}$ 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.
@article{strickland_effect_2017,
title = {Effect of annealing high-dose heavy-ion irradiated high-temperature superconductor wires},
volume = {409},
issn = {0168-583X},
url = {/publications/10.1016/j.nimb.2017.01.015.pdf},
doi = {10.1016/j.nimb.2017.01.015},
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)Ba$_{\textrm{2}}$Cu$_{\textrm{3}}$O$_{\textrm{7}}$ deposited on a buffered metal tape substrate in a continuous reel-toreel process. Irradiation was by 185 MeV $^{\textrm{197}}$Au ions. A high fluence of 3 × 10$^{\textrm{11}}$ ions/cm$^{\textrm{2}}$ 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.},
language = {en},
journal = {Nucl. Instrum. Methods Phys. Res. B},
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.},
month = oct,
year = {2017},
pages = {351--355},
file = {Strickland et al. - 2017 - Effect of annealing high-dose heavy-ion irradiated.pdf:C\:\\Users\\scwim\\OneDrive\\Work\\Zotero Library\\Strickland et al. - 2017 - Effect of annealing high-dose heavy-ion irradiated.pdf:application/pdf},
}
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