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Improvement of the critical current density in the silver sheathed Bi-Pb-Sr-Ca-Cu-O superconducting tape

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.101319· OSTI ID:6335791
The critical current density (J/sub c/) at 77 K and in 0 T of more than 3000 A/cm/sup 2/ has been obtained in the silver sheathed Bi-Pb-Sr-Ca-Cu-O tape fabricated by the combination process of sintering and intermediate cold working. The decrease of the J/sub c/ with increasing magnetic field is much smaller in the tape prepared by this process than that prepared by sintering only. The improvement of the J/sub c/ is attributed to the improvement of the coupling between the grains of the high T/sub c/ phase. The process enhances the formation of the high T/sub c/ phase and produces a highly oriented grain structure. These are considered to be responsible for the large improvement of the coupling.
Research Organization:
National Research Institute for Metals, 1-2-1, Sengen, Tsukuba-City, Ibaraki 305, Japan
OSTI ID:
6335791
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 54:16; ISSN APPLA
Country of Publication:
United States
Language:
English