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Angular dependent vortex pinning mechanisms in YBCO coated conductors and thin films
L. Civale, B. Maiorov, A. Serquis +8
We present a comparative study of the angular dependent critical current density in YBa2Cu3O7 films deposited on IBAD MgO and on single crystal MgO and SrTiO3 substrates. We identi…
RF Surface Resistance of a HIPped MgB2 Sample at 21 GHz
T. Tajima, F. L. Krawczyk, J. Liu +6
Magnesium diboride (MgB2) is attractive for RF cavity application for particle accelerators because it might not show an increase of RF surface losses at high magnetic surface fiel…
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…
Microwave performance of high-density bulk MgB2
A. T. Findikoglu, A. Serquis, L. Civale +6
We have performed microwave measurements on superconducting hot-isostatically- pressed (HIPed) bulk MgB2 using a parallel-plate resonator technique. The high density and strength o…
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…