Hysteretic ac losses in a superconductor strip between flat magnetic shields

Abstract

Hysteretic ac losses in a thin, current-carrying superconductor strip located between two flat magnetic shields of infinite permeability are calculated using Bean's model of the critical state. For the shields oriented parallel to the plane of the strip, penetration of the self-induced magnetic field is enhanced, and the current dependence of the ac loss resembles that in an isolated superconductor slab, whereas for the shields oriented perpendicular to the plane of the strip, penetration of the self-induced magnetic field is impaired, and the current dependence of the ac loss is similar to that in a superconductor strip flanked by two parallel superconducting shields. Thus, hysteretic ac losses can strongly augment or, respectively, wane when the shields approach the strip.

9 pages, 5 figures, submitted to PRB

References in corpus (4)

• Nucleation of superconductivity and vortex matter in superconductor - ferromagnet hybrids
• Analytical investigation of magnetic field distributions around superconducting strips on ferromagnetic substrates
• Field and current distributions and ac losses in superconducting strips
• Superconductor strip in a closed magnetic environment: exact analytic representation of the critical state

Cited by in corpus (2)

• Finite-element simulations of hysteretic ac losses in a magnetically coated superconducting tubular wire subject to an oscillating transverse magnetic field
• Experimental and theoretical study of AC losses in variable asymmetrical magnetic environments