Fabrication of $Bi_{2}Sr_{2}CaCu_{2}O_{8}$ Superconducting Films by the LiReac-PreCu Method

급속반응공정에 의한 동 테이프 $Bi_{2}Sr_{2}CaCu_{2}O_{8}$

  • 성현태 (한국전력공사 전력연구원) ;
  • 한상철 (한국전력공사 전력연구원) ;
  • 한영희 (한국전력공사 전력연구원) ;
  • 이준성 (한국전력공사 전력연구원) ;
  • 최희락 (부경대학교 재료공학과)
  • Published : 1999.05.01

Abstract

Wekk oriented $Bi_{2} Sr_{2} CaCu_{2} O_{8}$ suppercondcting thick films were fabricared on copper tape by LiReac-PreCu (liquid reaction between a Cu-free precousor and Cu tape) method. Cu-free precursor power which is composed of $Bi_{2}Sr_{2}Ca_{5}$ was printed on a copper tape by screen printing and was heat-treated. The speciment were partially in a molten state at the heat treatment temperature (85$0^{\circ}C$~87$0^{\circ}C$). The heat heat treatments for the reaction were performed in air or low oxygen pressure in several stages. XRD analyses of the resulting Bi2Sr2CaCu2O8 superconducting tapes show that the $Bi_{2} Sr_{2} CaCu_{2} O_{8}$ phase is dominant and a small amount of $Bi_{2} Sr_{2} Cu_{2} O_{6}$ phase is detected. Both phases are aligned in the c-axis direction.

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References

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