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Masi, A.; Alvani, C.; Angrisani Armenio, A.; Bellusci, M.; Celentano, G.; Fiamozzi Zignani, C.; Fabbri, F.; La Barbera, A.; Padella, F.; Pentimalli, M.; Silva, E.; Vannozzi, A.; Varsano, F.
Journal of physics. Conference series, 06/2020, Letnik: 1559, Številka: 1Journal Article
The optimization of sintering behaviour of iron chalcogenides superconducting materials is mandatory to enhance their critical current density, in order to pursuit their application in the production of superconducting wires. In this context it has been investigated here the effect of oxygen contamination on the material densification, considering the issues related to industrial oxygen-free isolated production lines. Our results show that the densification process is negatively affected by oxygen contamination. However, despite the difference in density, all sintered samples are characterized by similar structural and morphological features, and show comparable electrical and magnetic properties, with low critical current densities (Jc<103 A/cm2). These results suggest that densification is not the key limiting factor in these conditions, and that grain boundary or misorientation factors may play a greater role in limiting the performance of sintered iron chalcogenides superconductors.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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