Improved Hc2 in Bulk-Form Magnesium Diboride by Mechanical Alloying With Carbon
arXiv:cond-mat/0411199 · doi:10.1063/1.1920428
Abstract
High energy milling of MgB2 pre-reacted powder renders the material largely amorphous through extreme mechanical deformation and is suitable for mechanically alloying MgB2 with dopants including carbon. Bulk samples of milled C and MgB2 powders subjected to hot isostatic pressing and Mg vapor annealing have achieved critical fields in excess of 32T and critical current density approaching 10^6 A/cm^2.
13 pages, 3 figures references updated, typos corrected, numerical error corrected