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Effects of heat-treatment on critical current of BSCCO-2212 superconductor

✍ Scribed by J.S. Choi; S.Y. Oh; B.H. Jun; H.S. Kim; H.L. Kim; O.B. Hyun; C.J. Kim

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
560 KB
Volume
463-465
Category
Article
ISSN
0921-4534

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✦ Synopsis

Bi 2 Sr 2 Ca 1 Cu 2 O x (BSCCO-2212) tubes were fabricated by melt and solidification process. BSCCO-2212 powder compact was melted in a resistance furnace using a Pt crucible and poured in a rotating cylindrical mold. The solidified BSCCO-2212 tube samples were heattreated at various temperatures in oxygen atmosphere. The current-voltage curves at 77 K of the samples were obtained by transport measurement, and the microstructure was investigated by scanning electron microscope. It was found that the critical current (I c ) of the BSCCO-2212 samples was dependent on the heating schedule regarding the grain growth of the BSCCO-2212 plates and the formation of the second phase.

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