Reaction method control of impurity scattering in C-doped MgB2, proving the role of defects besides C substitution level

S K Chen, K Y Tan, A S Halim +6

In this study, Si and C were incorporated into polycrystalline MgB2 via in situ reaction of Mg and B with either SiC or with separate Si and C (Si+C). The electrical transport and…