Virgin magnetization of a magnetically shielded superconductor wire: theory and experiment
Yu.A. Genenko, S.V. Yampolskii, A.V. Pan
TL;DR
This paper combines theoretical calculations and experimental data to analyze the magnetic properties of a superconductor wire within a magnetic environment, providing insights into flux penetration and critical current estimation.
Contribution
It introduces an exact theoretical solution for the magnetic moment of a superconductor in a soft-magnet environment and offers a method to extract superconductor contributions from measurements.
Findings
Theoretical magnetic moment calculations match experimental data.
Method for estimating critical current from magnetic measurements.
Insights into flux penetration in superconductor/magnet systems.
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.
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