Positive influence of ta addition on superconductive properties of high pressure synthesized MgB_2

T. Prikhna, W. Gawalek, N. Novikov +10

Bulk MgB2 - based materials with the following critical current densities (jc) in 1 T field: 570 kA/cm^2 at 10 K, 350 kA/cm^2 at 20 K and 40 kA/cm^2 at 30 K and in 10 T field: 650…