Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A study on the improvements of Critical Current Density of Bi2223 Superconducting Tapes in PIT process

PIT법에 의한 Bi-2223 고온 초전도 테이프의 임계전류밀도 향상에 관한 연구

  • 장현만 (경상대학교 전기공학과) ;
  • 오상수 (한국전기연구소 초전도응용연구사업팀) ;
  • 하동우 (한국전기연구소 초전도응용연구사업팀) ;
  • 류강식 (한국전기연구소 초전도응용연구사업팀) ;
  • 김상현 (경상대학교 전기공학과)
  • Published : 1996.05.01
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Abstract

In order to investigate control factors to critical current density, Ag sheathed Bi2223 superconducting tapes were fabricated using PIT process. Optimizing the reduction ratio of rolling, critical current density 7f rolled Bi2223 tape could be improved with the value of 15,000 A/$\textrm{cm}^2$(77 K, zero field). The correlation between J$\_$c/ and work inhomogeneity was revealed as a dependence of COV of measured oxide layer thickness.

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