Ahead of Print article · Journal article
Lift Factor Analysis of Multifilamentary Coated Conductor Produced Using Two Level Undercut-Profile Substrates
Continuum Modelling and Testing, Department of Energy Conversion and Storage, Technical University of Denmark1
Department of Energy Conversion and Storage, Technical University of Denmark2
Slovak Academy of Sciences3
Bruker Corporation4
SUBRA IVS5
Wind Turbine Structures and Component Design, Department of Wind Energy, Technical University of Denmark6
Department of Wind Energy, Technical University of Denmark7
Functional Oxides, Department of Energy Conversion and Storage, Technical University of Denmark8
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2019 |
| Pages: | 1-4 |
| ISSN: | 23787074 , 10518223 and 15582515 |
| Types: | Ahead of Print article and Journal article |
| DOI: | 10.1109/TASC.2019.2896463 |
| ORCIDs: | Insinga, A. R. , Abrahamsen, A. B. , Grivel, J.-C. and Wulff, A. C. |
Critical current density High-temperature superconductors Magnetometers Multifilamentary superconductors
Bruker HTS Critical current density (superconductivity) Hastelloy substrate LUPS samples Magnetic hysteresis Magnetic moments Magnetic separation Substrates Superconducting magnets Temperature measurement YBCO alternating beam assisted deposition barium compounds critical current density critical current density (superconductivity) filaments high-temperature superconductors lift-factor analysis magnetic fields magnetic flux density 10 T magnetisation magnetization magnetometers multifilamentary coated conductor multifilamentary superconductors nonfilamentary reference sample pulsed laser deposition simple multiple rooftop model size 0.25 mm size 0.5 mm temperature 2.0 K to 77.0 K two-level undercut-profile substrates yttrium compounds
