Field Trapping Properties of c-Growth Region in RE123 Melt-Solidified Bulks

We have fabricated Ag-free and Ag-added Dy123 cylindrical melt-solidified bulks with large c -growth region. Samples cut from c -growth region of each bulk exhibited high J c up to high magnetic fields and excellent field trapping properties. On the contrary, J c and field trapping properties in the...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2009-06, Vol.19 (3), p.2949-2952
Hauptverfasser:	Yamazaki, Y., Ishii, Y., Ogino, H., Horii, S., Shimoyama, J., Kishio, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Chemical technology Conducting materials Crystal microstructure Educational technology Electrical engineering. Electrical power engineering Electromagnets Exact sciences and technology Grain sub boundaries High-temperature superconductors Low level Magnetic field measurement Magnetic fields Magnetic flux Magnetic materials Magnetic properties Powders Silver Superconducting materials superconducting materials growth superconducting materials measurements Superconductivity Trapping Various equipment and components
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Beschreibung
Zusammenfassung:	We have fabricated Ag-free and Ag-added Dy123 cylindrical melt-solidified bulks with large c -growth region. Samples cut from c -growth region of each bulk exhibited high J c up to high magnetic fields and excellent field trapping properties. On the contrary, J c and field trapping properties in the a -growth region were suppressed by subgrain boundaries. Magnetic flux penetration along the subgrain boundaries was confirmed in magneto-optical images of the a -growth region. Both J c and field trapping properties of Dy123 bulks were improved by Ag-addition due to low level Ag substitution for Cu site in the CuO chain.
ISSN:	1051-8223 1558-2515
DOI:	10.1109/TASC.2009.2018311