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

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

2004-01-12

arxiv.org/abs/cond-mat/0401184v2

Appl. Phys. Lett. 84 (19), 3921-3923 (2004)

Physics

Condensed Matter

Superconductivity

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

Scientific paper

10.1063/1.1741036

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.

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