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Improved Hc2 in Bulk-Form Magnesium Diboride by Mechanical Alloying With Carbon
B. J. Senkowicz, J. E. Giencke, S. Patnaik +3
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 dop…
Thermally-activated current transport in MgB_2 films
S. Patnaik, A. Gurevich, S. D. Bu +3
Thermally-activated flux flow (TAFF) resistivity above the irreversibility field is reported for two different c-axis textured MgB_2 superconducting films. Transport measurements a…
Positive exchange bias in ferromagnetic La0.67Sr0.33MnO3 / SrRuO3 bilayers
X. Ke, M. S. Rzchowski, L. J. Belenky +1
Epitaxial La0.67Sr0.33MnO3 (LSMO)/ SrRuO3 (SRO) ferromagnetic bilayers have been grown on (001) SrTiO3 (STO) substrates by pulsed laser deposition with atomic layer control. We obs…
High-field superconductivity in alloyed MgB2 thin films
V. Braccini, A. Gurevich, J. E. Giencke +24
We investigated the effect of alloying on the upper critical field in 12 films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, fi…