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 present investigation focuses on methods to further improve the J c values of disk-
shaped bulk MgB 2 superconductors by optimizing the sintering conditions. We prepared …

We present a detailed analysis of the effects of excess Mg on the lattice parameters, the
critical temperature (T c), the critical current (J c), the irreversibility field (H irr), and the upper …

A small amount of silver addition was found to dramatically decrease reaction temperature of
magnesium and boron forming the MgB 2 bulk without degradations in both critical …

We prepared bulk MgB2 from high‐purity commercial powders of Mg metal (99.9% purity)
and amorphous B (99% purity) powders using a single‐step solid state reaction at 775° C for …

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 …

The relationships between microstructures, crystallinity and critical current properties for B 4
C doped MgB 2 bulks, MgB 2− 5x (B 4 C) x with x= 0, 0.04, 0.1, 0.2 and 0.4, were …

Systematic research on the improvement in J c of MgB 2 bulks by the optimization of
sintering conditions was performed by applying a highly reproducible fabrication method …

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 …