Long lengths of Bi(2223) superconducting tapes

✍ Scribed by G. Grasso; F. Marti; Y. Huang; R. Flükiger

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 353 KB
• Volume: 37
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(97)00055-6

✦ Synopsis

The optimization of the fabrication of mono-and multifilamentary Bi(2223) tapes has been carried out in order to improve their transport properties on long lengths. At present, critical current densities as high as 34.5 and 28 kA cm-* have been reproducibly achieved at the liquid nitrogen temperature on long mono-and multifilamentary tapes, respectively. The behaviour in magnetic field of the transport properties of these tapes has been studied. At 77 K, a field of 1 T applied along the &planes of the Bi(2223) grains reduces the critical current by a factor of five and three in mono-and multifilamentary samples, respectively. It has been found that the excellent behaviour of the transport properties of multifilamentary tapes in applied field is a direct consequence of the higher degree of texture of the Bi(2223) grains.