156 citations · 726 across the 12 of their papers we have counts for
9 papers · 1 filter
The influence of structural defects on intra-granular critical currents of bulk MgB2
A. Serquis, X. Z. Liao, L. Civale +4
Bulk MgB2 samples were prepared under different synthesis conditions and analyzed by scanning and transmission electron microscopy. The critical current densities were determined f…
Hot isostatic pressing of powder in tube MgB2 wires
A. Serquis, L. Civale, D. L. Hammon +8
The critical current density (Jc) of hot isostatic pressed (HIPed) MgB2 wires, measured by d.c. transport and magnetization, is compared with that of similar wires annealed at ambi…
Defect structures in MgB2 wires introduced by hot isostatic pressing
X. Z. Liao, A. Serquis, Y. T. Zhu +6
The microstructures of MgB2 wires prepared by the powder-in-tube technique and subsequent hot isostatic pressing were investigated using transmission electron microscopy. Large amo…
Mg(B,O)2 precipitation in MgB2
X. Z. Liao, A. Serquis, Y. T. Zhu +5
MgB2 samples prepared by solid-state reaction were investigated using high-resolution transmission electron microscopy (HREM), X-ray energy-dispersive spectroscopy (EDX), electron…
Microstructure and high critical current of powder in tube MgB2
A. Serquis, L. Civale, D. L. Hammon +5
We report dc transport and magnetization measurements of Jc in MgB2 wires fabricated by the powder-in-tube method, using commercial MgB2 powder with 5 %at Mg powder added as an add…
The degradation of MgB2 under ambient environment
A. Serquis, Y. T. Zhu, D. E. Peterson +4
The superconductivities of samples prepared by several procedures were found to degrade under ambient environment. The degradation mechanism was studied by measuring the change of…