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Bismuth superconducting wires and their applications

✍ Scribed by K. Sato; N. Shibuta; H. Mukai; T. Hikata; M. Ueyama; T. Kato; J. Fujikami

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 459 KB
Volume: 33
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(93)90038-p

No coin nor oath required. For personal study only.

✦ Synopsis

The combination of a bismuth high T c phase (T c = 110 K) and powder-in-tube processing technology enables the fabrication of superconducting wires with high critical current density, mass producibility and flexibility. The maximum critical current density in liquid nitrogen reached 53 700 A cm-2 in zero magnetic field, 42 300 A cm-2 at 0.1 T and 12 000 A cm-2 at 1 T. Jc and Jo-B enhancements were obtained with finely dispersed non-superconducting phases and clean grain boundaries. Various prototypes were made to clarify their feasibility, such as 114 m long wires (Jc = 10 000 A cm 2 at 77.3 K), large current conductors (1~ = 2300 A at 77.3 K), a 0.21 T coil at 77.3 K, a 20.35 T coil at 20.3 K and a 23.37 T coil at 4.2 K.

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