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

Genenko, Yu. A.; Yampolski, S.V.; Pan, A.V.
May 2004
Applied Physics Letters;5/10/2004, Vol. 84 Issue 19, p3921
Academic Journal
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. A comparison of theoretical results with experiments on MgB2/Fe wires allows the estimation of the value of critical current for the first magnetic flux penetration.


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