Lift Factor Analysis of Multifilamentary Coated Conductor Produced Using Two Level Undercut-Profile Substrates

A. R. Insinga*, M. Solovyov, Alexander Usoskin, A. Rutt, U. Betz, J. H. Lundeman, A. B. Abrahamsen, J.-C. Grivel, F. Gömöry, A. C. Wulff

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Here we present a detailed characterization of the critical current density of YBa2Cu3O7-œ (YBCO) two level undercut-profile substrate (2LUPS)-based samples made at the Technical University of Denmark (DTU) using Hastelloy substrate. The CC architecture was produced at Bruker HTS by means of alternating beam assisted deposition (ABAD) and pulsed laser deposition (PLD). The magnetization of different samples having all the same size, but with various numbers of filaments, including a non-filamentary reference sample have been measured in applied magnetic fields up to 16T and at temperatures ranging from T=2K to 77K. A simple multiple rooftop model is proposed to estimate the critical current density of the filaments and it has been observed that filaments of 250μm and 500μm width are providing similar critical current densities in the order of Jc ≈ 2.3 MA/cm2 at T=4.2K and B=10T as well as the reference samples without filaments. This result indicates that the filaments have been fabricated with no degradation of the superconductor and that the filaments are decoupled with non-superconducting material. Finally, the lift factor of the critical current Ic with respect to T=77K and self field of the 2LUPS samples is estimated. This is reaching 10 at T=4.2 K and B=10 T.
Original languageEnglish
Article number8200704
JournalIEEE Transactions on Applied Superconductivity
Volume29
Issue number5
Number of pages4
ISSN1051-8223
DOIs
Publication statusPublished - 2019

Keywords

  • Critical current density
  • High-temperature superconductors
  • Multifilamentary superconductors
  • Magnetometers

Cite this

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title = "Lift Factor Analysis of Multifilamentary Coated Conductor Produced Using Two Level Undercut-Profile Substrates",
abstract = "Here we present a detailed characterization of the critical current density of YBa2Cu3O7-œ (YBCO) two level undercut-profile substrate (2LUPS)-based samples made at the Technical University of Denmark (DTU) using Hastelloy substrate. The CC architecture was produced at Bruker HTS by means of alternating beam assisted deposition (ABAD) and pulsed laser deposition (PLD). The magnetization of different samples having all the same size, but with various numbers of filaments, including a non-filamentary reference sample have been measured in applied magnetic fields up to 16T and at temperatures ranging from T=2K to 77K. A simple multiple rooftop model is proposed to estimate the critical current density of the filaments and it has been observed that filaments of 250μm and 500μm width are providing similar critical current densities in the order of Jc ≈ 2.3 MA/cm2 at T=4.2K and B=10T as well as the reference samples without filaments. This result indicates that the filaments have been fabricated with no degradation of the superconductor and that the filaments are decoupled with non-superconducting material. Finally, the lift factor of the critical current Ic with respect to T=77K and self field of the 2LUPS samples is estimated. This is reaching 10 at T=4.2 K and B=10 T.",
keywords = "Critical current density, High-temperature superconductors, Multifilamentary superconductors, Magnetometers",
author = "Insinga, {A. R.} and M. Solovyov and Alexander Usoskin and A. Rutt and U. Betz and Lundeman, {J. H.} and Abrahamsen, {A. B.} and J.-C. Grivel and F. G{\"o}m{\"o}ry and Wulff, {A. C.}",
year = "2019",
doi = "10.1109/TASC.2019.2896463",
language = "English",
volume = "29",
journal = "I E E E Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers",
number = "5",

}

Lift Factor Analysis of Multifilamentary Coated Conductor Produced Using Two Level Undercut-Profile Substrates. / Insinga, A. R.; Solovyov, M.; Usoskin, Alexander; Rutt, A.; Betz, U.; Lundeman, J. H.; Abrahamsen, A. B.; Grivel, J.-C.; Gömöry, F.; Wulff, A. C.

In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 8200704, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Lift Factor Analysis of Multifilamentary Coated Conductor Produced Using Two Level Undercut-Profile Substrates

AU - Insinga, A. R.

AU - Solovyov, M.

AU - Usoskin, Alexander

AU - Rutt, A.

AU - Betz, U.

AU - Lundeman, J. H.

AU - Abrahamsen, A. B.

AU - Grivel, J.-C.

AU - Gömöry, F.

AU - Wulff, A. C.

PY - 2019

Y1 - 2019

N2 - Here we present a detailed characterization of the critical current density of YBa2Cu3O7-œ (YBCO) two level undercut-profile substrate (2LUPS)-based samples made at the Technical University of Denmark (DTU) using Hastelloy substrate. The CC architecture was produced at Bruker HTS by means of alternating beam assisted deposition (ABAD) and pulsed laser deposition (PLD). The magnetization of different samples having all the same size, but with various numbers of filaments, including a non-filamentary reference sample have been measured in applied magnetic fields up to 16T and at temperatures ranging from T=2K to 77K. A simple multiple rooftop model is proposed to estimate the critical current density of the filaments and it has been observed that filaments of 250μm and 500μm width are providing similar critical current densities in the order of Jc ≈ 2.3 MA/cm2 at T=4.2K and B=10T as well as the reference samples without filaments. This result indicates that the filaments have been fabricated with no degradation of the superconductor and that the filaments are decoupled with non-superconducting material. Finally, the lift factor of the critical current Ic with respect to T=77K and self field of the 2LUPS samples is estimated. This is reaching 10 at T=4.2 K and B=10 T.

AB - Here we present a detailed characterization of the critical current density of YBa2Cu3O7-œ (YBCO) two level undercut-profile substrate (2LUPS)-based samples made at the Technical University of Denmark (DTU) using Hastelloy substrate. The CC architecture was produced at Bruker HTS by means of alternating beam assisted deposition (ABAD) and pulsed laser deposition (PLD). The magnetization of different samples having all the same size, but with various numbers of filaments, including a non-filamentary reference sample have been measured in applied magnetic fields up to 16T and at temperatures ranging from T=2K to 77K. A simple multiple rooftop model is proposed to estimate the critical current density of the filaments and it has been observed that filaments of 250μm and 500μm width are providing similar critical current densities in the order of Jc ≈ 2.3 MA/cm2 at T=4.2K and B=10T as well as the reference samples without filaments. This result indicates that the filaments have been fabricated with no degradation of the superconductor and that the filaments are decoupled with non-superconducting material. Finally, the lift factor of the critical current Ic with respect to T=77K and self field of the 2LUPS samples is estimated. This is reaching 10 at T=4.2 K and B=10 T.

KW - Critical current density

KW - High-temperature superconductors

KW - Multifilamentary superconductors

KW - Magnetometers

U2 - 10.1109/TASC.2019.2896463

DO - 10.1109/TASC.2019.2896463

M3 - Journal article

VL - 29

JO - I E E E Transactions on Applied Superconductivity

JF - I E E E Transactions on Applied Superconductivity

SN - 1051-8223

IS - 5

M1 - 8200704

ER -