한국초전도학회:학술대회논문집

The Korean Superconductivity Society (한국초전도학회)
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Fabrication of Bi System Superconducting Films on Cu Tape with Melt-Quenched Cu-free Materials

Cu-free 비정질체를 이용한 동 테이프 위의 Bi계 초전도 후막 제조

  • Sung, Tae-Hyun (Power System Laboratroy, Korea Electric Power Research Institute, KEPCO) ;
  • Han, Sang-Chul (Power System Laboratroy, Korea Electric Power Research Institute, KEPCO) ;
  • Han, Young-Hee (Power System Laboratroy, Korea Electric Power Research Institute, KEPCO) ;
  • Lee, Jun-Seong (Power System Laboratroy, Korea Electric Power Research Institute, KEPCO) ;
  • Kim, Sang-Joon (Power System Laboratroy, Korea Electric Power Research Institute, KEPCO)
  • 성태현 (전력연구원, 전력계통연구실) ;
  • 한상철 (전력연구원, 전력계통연구실) ;
  • 한영희 (전력연구원, 전력계통연구실) ;
  • 이준성 (전력연구원, 전력계통연구실) ;
  • 김상준 (전력연구원, 전력계통연구실)
  • Published : 1999.08.18
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Abstract

Bi$_{2}Sr_{2}CaCu_{2}O_{\delta}$ superconducting films were rapidly fabricated on copper tape by liquid reaction between a Cu-free precursor and Cu tape (LiReac-PreCu) method. Those thick films were well oriented along the c-axis. The precursor was made by melt-quenched technology using twin roller. The melt-quenched films were transparent and glossy yellow in appearance. These films which were the compostion of Bi$_2SrCaO_y$, Bi$_3Sr_2CaO_z$ were placed on copper tape and then heated at various temperatures for several minutes in air. They were analyzed using X-ray powder diffraction, SEM, a DC four-probe method. The mechanism of superconducting phase formation . from the melt-quenched precursor on Cu tape was studied

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