On the stability of the critical state with inhomogeneous temperature in composite superconductors |
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Authors: | NA Taylanov GR Berdiyorov |
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Institution: | (1) Theoretical Physics Department, Scientific Research Institute for Applied Physics, National University of Uzbekistan, Tashkent, 700174, Uzbekistan, UZ |
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Abstract: | The problem of the thermal and magnetic destruction of the critical state in composite superconductors is investigated. The
initial distributions of temperature and electromagnetic field are assumed to be essentially inhomogeneous. The limit of the
thermomagnetic instability in quasi-stationary approximation is determined. The obtained integral criterion, unlike the analogous
criterion for a homogeneous temperature profile, is shown to take into account the influence of any part of the superconductor
on the threshold for critical-state instability.
Received 11 October 2001 / Received in final form 30 November 2002 Published online 14 February 2003
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ID="a"e-mail: taylanov@iaph.tkt.uz |
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Keywords: | PACS 74 60 Ge Flux pinning flux creep and flux-line lattice dynamics – 74 20 De Phenomenological theories (two-fluid Ginzburg-Landau etc ) – 74 25 Ha Magnetic properties |
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