Effective low-temperature flux pinning by Au ion irradiation in HTS coated conductors

N. M. Strickland; S. C. Wimbush; J. V. Kennedy; M. C. Ridgway; E. F. Talantsev; N. J. Long

doi:10.1109/TASC.2014.2366079

Effective low-temperature flux pinning by Au ion irradiation in HTS coated conductors

N. M. Strickland, S. C. Wimbush, J. V. Kennedy, M. C. Ridgway, E. F. Talantsev, N. J. Long

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18 Citations (Scopus)

Abstract

We report the effects of heavy-ion irradiation on critical currents in (Y,Dy)Ba₂Cu₃O₇-δ coated conductors made by a commercial metal organic deposition process. Irradiation with 185 MeV Au ions is investigated and contrasted with previous results on 74 MeV Ag ions. The change in critical current (I_c) is reported as a function of temperature (30-77 K), magnetic field (0-7 T) and magnetic-field angle (full angle dependence). Significant improvements are seen particularly at 30-40 K where I_c can be enhanced over a wide angular range and the minimum of I_c(θ) has been enhanced by up to 60%. This contrasts with the data for the commonly utilized regime of 77 K, 1 T where the I_c enhancements are small or limited to a narrow angular range. This data also serves to illustrate the need to measure I_c in all of the temperature and field regimes of technical interest and to measure the complete field-angular dependence I_c(θ).

Original language	English
Article number	6939646
Journal	IEEE Transactions on Applied Superconductivity
Volume	25
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2014.2366079
Publication status	Published - 1 Jun 2015

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title = "Effective low-temperature flux pinning by Au ion irradiation in HTS coated conductors",

abstract = "We report the effects of heavy-ion irradiation on critical currents in (Y,Dy)Ba2Cu3O7-δ coated conductors made by a commercial metal organic deposition process. Irradiation with 185 MeV Au ions is investigated and contrasted with previous results on 74 MeV Ag ions. The change in critical current (Ic) is reported as a function of temperature (30-77 K), magnetic field (0-7 T) and magnetic-field angle (full angle dependence). Significant improvements are seen particularly at 30-40 K where Ic can be enhanced over a wide angular range and the minimum of Ic(θ) has been enhanced by up to 60%. This contrasts with the data for the commonly utilized regime of 77 K, 1 T where the Ic enhancements are small or limited to a narrow angular range. This data also serves to illustrate the need to measure Ic in all of the temperature and field regimes of technical interest and to measure the complete field-angular dependence Ic(θ).",

keywords = "YBCO, angular anisotropy, coated conductor, critical current, flux pinning, ion irradiation",

author = "Strickland, {N. M.} and Wimbush, {S. C.} and Kennedy, {J. V.} and Ridgway, {M. C.} and Talantsev, {E. F.} and Long, {N. J.}",

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T1 - Effective low-temperature flux pinning by Au ion irradiation in HTS coated conductors

AU - Strickland, N. M.

AU - Wimbush, S. C.

AU - Kennedy, J. V.

AU - Ridgway, M. C.

AU - Talantsev, E. F.

AU - Long, N. J.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - We report the effects of heavy-ion irradiation on critical currents in (Y,Dy)Ba2Cu3O7-δ coated conductors made by a commercial metal organic deposition process. Irradiation with 185 MeV Au ions is investigated and contrasted with previous results on 74 MeV Ag ions. The change in critical current (Ic) is reported as a function of temperature (30-77 K), magnetic field (0-7 T) and magnetic-field angle (full angle dependence). Significant improvements are seen particularly at 30-40 K where Ic can be enhanced over a wide angular range and the minimum of Ic(θ) has been enhanced by up to 60%. This contrasts with the data for the commonly utilized regime of 77 K, 1 T where the Ic enhancements are small or limited to a narrow angular range. This data also serves to illustrate the need to measure Ic in all of the temperature and field regimes of technical interest and to measure the complete field-angular dependence Ic(θ).

AB - We report the effects of heavy-ion irradiation on critical currents in (Y,Dy)Ba2Cu3O7-δ coated conductors made by a commercial metal organic deposition process. Irradiation with 185 MeV Au ions is investigated and contrasted with previous results on 74 MeV Ag ions. The change in critical current (Ic) is reported as a function of temperature (30-77 K), magnetic field (0-7 T) and magnetic-field angle (full angle dependence). Significant improvements are seen particularly at 30-40 K where Ic can be enhanced over a wide angular range and the minimum of Ic(θ) has been enhanced by up to 60%. This contrasts with the data for the commonly utilized regime of 77 K, 1 T where the Ic enhancements are small or limited to a narrow angular range. This data also serves to illustrate the need to measure Ic in all of the temperature and field regimes of technical interest and to measure the complete field-angular dependence Ic(θ).

KW - YBCO

KW - angular anisotropy

KW - coated conductor

KW - critical current

KW - flux pinning

KW - ion irradiation

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DO - 10.1109/TASC.2014.2366079

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 3

M1 - 6939646

ER -

Effective low-temperature flux pinning by Au ion irradiation in HTS coated conductors

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