Progress in Superconductivity

The Korean Superconductivity Society (한국초전도학회)
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Flux Jump of $MgB_2$ fabricated by commercial stainless steel tube enveloping technique

상용 스테인리스 스틸 튜브 봉합기법(COSSET)으로 제작 된 MgB$_2$flux jump 현상

  • Lee, H.B. (Department of Physics, Pusan National University) ;
  • Kim, B.J. (Department of Physics, Pusan National University) ;
  • Kim, Y.C. (Department of Physics, Pusan National University) ;
  • Jeong, D.Y. (Korea Electrotechnology Research Institute)
  • Published : 2002.01.01
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Abstract

MgB$_2$samples have been prepared by a stoichiometry mixture of Mg and B inside stainless steel tubes(Commercial Stainless Steel Tube Enveloping Technique). XRD data show that there are no second phases like MgO. The transition temperature of specimens is 37.5 K with a sharp transition width of ΔTc within 1K. From magnetic hysteresis measurement, flux jump was shown up to 15K, which was higher than that of samples by other methods. We have concluded that the flux jump is mainly affected by impurities and second phases.

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