Virgin magnetization of a magnetically shielded superconductor wire: theory and experiment

Abstract

On the basis of exact solutions to the London equation the magnetic moment of a type II superconductor filament surrounded by a soft-magnet environment is calculated and the procedure of extracting the superconductor contribution from magnetic measurements is suggested. Comparison of theoretical results with experiments on MgB_2/Fe wires allows estimation of the value of critical current for the first magnetic flux penetration.

4 pages, 2 figures, RevTeX4; submitted to Applied Physics Letters

References in corpus (1)

• An Overview of the Basic Physical Properties of MgB${}_2$

Cited by in corpus (9)

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• Entry of magnetic flux into a magnetically shielded type-II superconductor filament
• Magnetic detectability of a finite size paramagnet/superconductor cylindrical cloak
• Magnetic cloaking by a paramagnet/superconductor cylindrical tube in the critical state
• Finite-element simulations of hysteretic ac losses in a magnetically coated superconducting tubular wire subject to an oscillating transverse magnetic field
• The Bean-Livingston barrier at a superconductor/magnet interface
• Critical State Theory For The Magnetic Coupling Between Soft Ferromagnetic Materials And Type-II Superconductors
• Magnetic dipole-vortex interaction in a bilayer superconductor/soft-magnet heterostructure
• The Bean model of the critical state in a magnetically shielded superconductor filament