Ferromagnetic artificial pinning centers in multifilamentary superconducting wires
Journal Article
·
· Advances in Cryogenic Engineering
OSTI ID:482125
- Yale Univ., New Haven, CT (United States); and others
The authors fabricated multifilamentary NbTi wires with ferromagnetic (FM) artificial pinning centers (APCs) to enhance the critical current density (J{sub c}) in magnetic fields. They used a bundle and draw technique to process the APC wires with either Ni or Fe as the pinning centers. Both wires produced higher J{sub c} in the high field range (5-9 T) than previous non-magnetic APC wires similarly processed, even though the authors have not yet optimized pin percentage. Using a magnetometer they found that the pins remained ferromagnetic for the wires with maximum J{sub c}. However, they did observe a substantial loss of FM material for the wires where the pin diameter approached 3 nm. Thus, they expect further enhancement of J{sub c} with better pin quality.
- OSTI ID:
- 482125
- Report Number(s):
- CONF-950722--; CNN: Grant 94G014
- Journal Information:
- Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN ACYEAC; ISSN 0065-2482
- Country of Publication:
- United States
- Language:
- English
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