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Vortex Dynamics and Pinning Properties Analysis of MgB 2 Bulk Samples by ac Susceptibility Measurements

Senatore, C.; Polichetti, M.; Zola, Danilo; Di Matteo, Tiziana; Giunchi, Giovanni; Pacheco, A J


Flux line dynamics have been investigated on MgB2 bulk superconductors obtained by reactive liquid infiltration by measuring the ac magnetic susceptibility. The fundamental and third harmonics have been studied as a function of temperature, dc magnetic field, ac field amplitude and frequency. In order to determine the dynamical regimes governing the vortex motion, the experimental results have been compared with susceptibility curves obtained by numerical calculations of the non-linear...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Superconductor Science and Technology
DOI: 10.1088/0953-2048/16/2/310


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