An experimental study of the effect of MgO content in the MgB 2 powder used for ex situ made composite wires was carried out. Two single-core MgB 2 /Fe/Cu wires were made using commercial MgB 2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of as-deformed and heat-treated wires were measured. The differences between the wires are discussed and correlated with the MgO content. It was found that by increasing the amount of MgO, the inter-grain connectivity worsens, but well distributed and low size MgO particles improve flux pinning.
No takes yet. Share an insight, caveat, or question.
Ková et al. (2004) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: