Magnetic properties of finite superconducting cylinders. I. Uniform applied field

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A model for the calculation of the magnetic levitation force for finite type-II superconductors in the critical state is presented in a series of two papers. In the first paper, we describe the main features of the model and understand the effect of demagnetizing fields in the magnetic properties of finite superconductors by considering the case of a superconducting cylinder in the presence of a homogeneous applied field. Field and current profiles are calculated from a minimization of the magnetic energy in the superconductor after a change in the applied field. Results are presented for both constant and field-dependent critical currents. The procedure is general enough to be applied to the case of nonuniform applied fields, as long as the cylindrical geometry is preserved. © 2001 The American Physical Society.
Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 1 Jan 2001


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