J{sub c} performance of Ag sheathed Bi-2223 HTS composite conductors
Journal Article
·
· Advances in Cryogenic Engineering
OSTI ID:482055
- American Superconductor Corp., Westborough, MA (United States)
High critical current densities in the commercially interesting Ag sheathed Bi-2223 HTS composite conductors have been achieved using the powder-in-tube (PIT) technique. At 77 K and self-field, average J{sub c} performance of 50,000, 45,500, and 39,700 A/cm{sup 2} has been obtained for pressed monofilament, pressed multifilament, and rolled multifilament conductors, respectively. The electrical performance of both rolled and pressed multifilament tapes has been characterized in magnetic fields up to 7 T (B {perpendicular} tape-plane and B {parallel} tape-plane) and in a temperature range from 50 to 85 K. Both samples show conventional exponential magnetic field dependence in the high-field regime. The decrease of J{sub c} with increasing magnetic field for B {parallel} tape-plane is found to be less substantial for the rolled tape than for the pressed tape leading to a better J{sub c} retention characteristic for the rolled tape.
- OSTI ID:
- 482055
- Report Number(s):
- CONF-950722--
- Journal Information:
- Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN 0065-2482; ISSN ACYEAC
- Country of Publication:
- United States
- Language:
- English
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