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Critical-current density for superconductors with giant flux creep.

Author(s) : DING Q., XU J. J., REN C., SHAO H. M., LIN J. W., DING S. Y.

Type of article: Article

Summary

Critical-current density, J(c), is studied for superconductors with giant flux creep. It is shown that there do exist J(c) for such superconductors and the J(c) is determined by the effective activation energy of flux diffusion rather than by the force of flux pinning. A procedure is proposed to determine J(c) as a function of field, temperature and criterion if the effective activation energy is known. The study not only shows the importance of the criterion for such J(c) but also that mercury-1223 is one of the more promising high-critical temperature materials from a practical standpoint because of its high J(c) and critical temperature.

Details

  • Original title: Critical-current density for superconductors with giant flux creep.
  • Record ID : 1997-2654
  • Languages: English
  • Source: Cryogenics - vol. 36 - n. 7
  • Publication date: 1996/07

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