Samarium element has been substituted to yttrium in Y123 superconducting melt textured bulk samples in order to make the whole fabrication process much faster. A preliminary comparison between directionally solidified Y1Ba2Cu3O7- and Sm1Ba2Cu3O7-x bulk bars fabricated with the horizontal Bridgman method has been done. The different microstructural and superconducting features are studied by means of X-ray, SEM analysis, ac and dc susceptibility measurements. The quality of Sm123 samples appears comparable with the Y123 one grown using an almost two orders of magnitude lower pulling rate.
high rate melt processed SmBa2Cu3O7-x bulk superconductors
A Di Trolio;A Vecchione;
1997
Abstract
Samarium element has been substituted to yttrium in Y123 superconducting melt textured bulk samples in order to make the whole fabrication process much faster. A preliminary comparison between directionally solidified Y1Ba2Cu3O7- and Sm1Ba2Cu3O7-x bulk bars fabricated with the horizontal Bridgman method has been done. The different microstructural and superconducting features are studied by means of X-ray, SEM analysis, ac and dc susceptibility measurements. The quality of Sm123 samples appears comparable with the Y123 one grown using an almost two orders of magnitude lower pulling rate.File in questo prodotto:
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