The effect of partial cracking on critical current density (J,) has been modelled for Agsheathed superconductor tapes. Effects of crack length and density on current-voltage characteristics and J, were evaluated for monofilament and multifilament tapes. The results show that a single long crack is m
Influence of additive elements on the critical current density of Ag sheathed BPSCCO tapes
β Scribed by Sang Soo OH; Momoki Kamo; Kozo Osamura
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 187 KB
- Volume
- 185-189
- Category
- Article
- ISSN
- 0921-4534
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BSCCO-2223 tapes have been produced by the 'powder-in-tube' method with reproducible critical current densities of > 1 x 104 A cm-2 at 77 K and 5 x 104 A cm-2 at 4.2 K. Superconductivity at 77 K was retained in fields of up to 7 T. The influence of mechanical treatments (e.g. drawing, rolling and pr
Fabrication of long Ag-sheathed Bi2Sr2CalCu2Oa composite tapes is sometimes accompanied by the distribution of large bubble-type defects located at relatively uniform intervals along the length of the conductor. The size, shape and number of these defects dictate the critical current density and eve