Mechanism of enhancement in electromagnetic properties of MgB2 by Nano SiC doping.

Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SiC doping

Doping of MgB2 by nano-SiC and its potential for the improvement of flux pinning were studied for MgB22x(SiC)x/2 with x50, 0.2, and 0.3 and for 10 wt % nano-SiC-doped MgB2 samples. Cosubstitution of B by Si and C counterbalanced the effects of single-element doping, decreasing Tc by only 1.5 K, introducing intragrain pinning centers effective at high fields and temperatures, and significantly e...

A significant improvement in the superconducting properties of MgB2 by co-doping with graphene and nano-SiC

THE COMBINED INFLUENCE OF SiC AND RARE-EARTH OXIDES DOPING ON SUPERCONDUCTING PROPERTIES OF MgB2 WIRES

Ti-sheathed MgB2 wires doped with different amount of nanosized rare-earth oxide (Yb2O3, Gd2O3, and Dy2O3) and/or nanosized SiC were investigated. X-ray diffraction patterns suggested the existence of Mg2Si phase due to the SiC addition, while no any phase related to rare-earth oxide could be detected. Strong enhancement of in-field current carrying capability was observed on 2.5 wt.% Yb2O3 dop...

Effect of sample size on the magnetic critical current density in nano-SiC doped MgB2 superconductors

"Organic" MgB2-xCx superconductor with high performance enabled by liquid mixing approach

Comparative analysis of structural and electromagnetic characteristics have been performed on nano SiCand polycarbosilane-doped MgB2 samples prepared by the dry and liquid mixing approaches. The total benefit of liquid mixing approach for fabrication of “organic” MgB2 superconductor with excellent electromagnetic performance has been demonstrated.