Current-voltage characteristics of a foamed Bi1.8Pb0.3Sr2Ca2Cu3Ox high-temperature superconductor with fractal cluster structure

Тип публикации: статья из журнала

Год издания: 2006

Идентификатор DOI: 10.1134/S1063783406020016

Аннотация: The influence of the structure of foamed polycrystalline bismuth-based superconductors on their critical currents and current-voltage characteristics is studied. It is found that superconducting foams have a fractal structure, and the fractal dimension of the boundary between the normal and superconducting phases is estimated. The magnetic and transport properties of superconducting foams are investigated, and the current-voltage characteristics are obtained in a wide range of currents. The effect of percolation phenomena on vortex pinning in a foamed superconductor is considered. The current-voltage characteristics of the superconducting foams at the beginning of the resistive transition are found to be in good agreement with a model in which a magnetic flux is assumed to be trapped in the fractal clusters of a normal phase.

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Издание

Журнал: PHYSICS OF THE SOLID STATE

Выпуск журнала: Vol. 48, Is. 2

Номера страниц: 207-212

ISSN журнала: 10637834

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Balaev D.A. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Gokhfeld D.M. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Petrov M.I. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Popkov S.I. (Reshetnev Siberian State Aerospace University)
  • Shaikhutdinov K.A. (Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences)
  • Belozerova I.L. (Reshetnev Siberian State Aerospace University)
  • Kashkina L.V. (Krasnoyarsk Stale University)
  • Kuzmin Yu.I. (Ioffe Physicotechnical Institute,Russian Academy of Sciences)
  • Michel C.R. (CUCEI Universidad de Guadalajara)

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