Synthesis and superconducting properties of Nd0.33Eu0.08Gd0.58Ba2Cu3O z materials
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We have studied the effect of the ratio of different rare-earth element on the superconducting properties and phase formation of (Nd0.33Eu0.08Gd0.58)Ba2Cu3O z ceramic. Bulk NEG samples were prepared using the solid-state reaction process. The superconducting transition for Nd0.33Eu0.08Gd0.58Ba2Cu3O z is T c ≈90 K and the value of the critical current density (J c ) is 13.9 A/cm2 at 77 K under zero magnetic fields. This value is twice as high when compared with the (J c ) value of YBCO systems (J c = 7.31 A/cm2). The obtained bulk sample was used for the production of superconducting Ag-sheathed tapes by OPIT method including hot rolling. The critical current density of the obtained tape (337 A/cm2) is one order higher than the one of the bulk sample.
KeywordsNEG superconducting ceramic microstructure OPIT method
PACS (2008)61.10Nz 68.37-d 68.37Hk 68.55Jk
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