The doping effect of Ti and Zr on the superconducting properties and the microstructure of
sintered MgB2 bulk materials has been studied. The transition metal is found to work as a …

We studied the Ti doping effect on the superconducting properties and microstructure of
sintered MgB 2 bulk polycrystals. Using Ti as a sintering assistant, we have fabricated MgB 2 …

Ti-doped MgB 2 superconductors with different doping levels were prepared by solid-state
reaction at ambient pressure. The density, diamagnetic signal, and J c of the samples …

The minor Cu (< 3at%) addition could significantly reduce the amount of MgO impurity in the
in situ sintered MgB2 samples and thus improve the critical current density (Jc) at low field …

MgB 2 bulks were synthesized by the solid-state reaction of Mg and B at 600 C and their
superconducting properties were compared with samples heated at 850 C. The samples …

We present the superconducting properties and phase compositions of Mg 1− x Zr x B 2 bulk
samples fabricated by a solid-state reaction at ambient pressure. It is found that a small …

The influence of Cu addition on the microstructure and superconducting performance of ex-
situ sintered MgB 2 is systemically studied. It is found that the critical current density (J c) of …

The improved critical current density was obtained for ex-situ MgB 2 bulks initially sintered at
900° C for 2 h and then at 650° C for 1 h. It was found that local liquid Mg phase sintering is …

In order to improve the extrinsic superconducting properties of MgB2 a combination of
nanocrystalline microstructure and particle doping was studied with regard to the …

Nanocrystalline MgB 2 bulk superconductors have been fabricated by ultra-high pressure-
assisted sintering (∼ 5 GPa) over a range of temperatures (700° C-1100° C). Phase …