Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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An experimental study of magnetic diffusion in Bi-2212 High-Tc supercondutor tube

Bi-2212 고온초전도체 튜브의 자기확산에 관한 연구

  • 정성기 (전남대학교 기계공학과) ;
  • 설승윤 (전남대학교 기계시스템공학부)
  • Published : 2003.09.01
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Abstract

Transient magnetic diffusion process in a melt-cast Bi2Sr2CaCu20X(Bi-2212) tube was studied by experimental and numerical analyses. The transient diffusion partial differential equation is transformed into an ordinary differential equation by integral method. The penetration depth of magnetic field into a superconducting tube is obtained by solving the differential equation numerically. The results show that the penetration depth as a function of time which is somewhat different from the results by Bean's critical state model. The reason of the difference between the present results and that of Bean's model is discussed and compared in this paper. This experiment measure the magnetic flux density in the supercondutor after supply direct-current of Bi-2212 rounded by copper coil. This study was discussed of valid of a previous numerical solution which is compared by the penetrate time and the magnetic flux density difference of between the present results and the numerical solution.

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References

  1. IEEE Transaction on Applied Superconductivity v.11 no.1 Thermal and Magnetic Characteristic of Bulk Superconductor and Performance Analysis of Magnetic Shielding Type of Superconducting Fault Current Limiter H.Ueda;A.Ishiyame;H.Kado:M.Ichikawa
  2. Physica v.D no.137 On the periodic behavior of solution to d diffusion problem describing current in high-temperature superconductor P.Bauman;M.Friesen;D.Phillips
  3. Solid State communications v.103 no.7 Slow Magnetic Flux Diffusion in Type-Ⅱ Superconductors F.Bass;B.Ya.Shapiro;M.Shvarser https://doi.org/10.1016/S0038-1098(97)00190-7
  4. IEEE Transaction on Applied Superconductivity v.11 no.1 Finite Element Analysis of Magnetic Field in High Temperature Bulk Superconductor Yon Do Chun;Youn Hyun Kim;Ju Lee;Jung Pyo Hong;Jong Woo Lee
  5. IEEE Transaction on Applied Superconductivity v.11 no.1 Transient Characteristics of High-Tc Superconductor Tube Subjected to Internal and External Magnetic Field Y.S.Cha;T.R.Askew
  6. Physica C v.361 Magnetic diffusion in high-Tc supercondutors Y.S.Cha https://doi.org/10.1016/S0921-4534(01)00287-8
  7. Physica v.C no.301 Magnetic diffusion and dissipation in high-Tc superconductor subjected to sinusoidal applied field Y.S.Cha
  8. Trans on EEM v.15 no.11 Analysis of Transient Magneric Diffusion in a High-Temperature Superconductor Tube S.Y.Seol;S.K.Jung