Critical current of high Tc superconducting Bi2223/Ag tapes


Huang, Y.K. and Haken, B. ten and Kate, H.H.J. ten (1998) Critical current of high Tc superconducting Bi2223/Ag tapes. Physica C: Superconductivity, 309 (3-4). pp. 197-202. ISSN 0921-4534

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Abstract:The magnetic field dependence of the critical current of various high Tc superconducting Bi2223/Ag tapes indicates that the transport current is carried through two paths: one is through weakly-linked grain boundaries (Josephson junctions); another is through well-connected grains. The critical current flowing through the weakly-linked grain boundaries, ICw, can be characterized by the Fraunhofer-pattern, taking into account the distribution of junction dimension in the tapes. The critical current along the path of well-connected grains, ICs, is a complex exponential function of the applied field depending on the pinning strength in the grains.
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Copyright:© 1998 Elsevier
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