OXIDE SUPERCONDUCTOR AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To obtain an oxide superconductor having a high critical current density even in a high magnetic field by incorporating a specified amt. of a specified element (compd.) into an RE-Ba-Cu-O superconductor. SOLUTION: The oxide superconductor contains 0.05-1 wt. % one or more among...

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Bibliographische Detailangaben
Hauptverfasser: KOBAYASHI SHIYUUICHI, HASEYAMA HIDEETSU, SATO MAMORU
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To obtain an oxide superconductor having a high critical current density even in a high magnetic field by incorporating a specified amt. of a specified element (compd.) into an RE-Ba-Cu-O superconductor. SOLUTION: The oxide superconductor contains 0.05-1 wt. % one or more among Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Sr, Zr, Nb, Mo, Tc, In, Sn, Sb, Tc, Cs, La, Ce, Pt, Nd, Hf, Ta, W and Bi in an oxide superconductor contg. an RE2 BaCuO5 phase (RE is Y, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu) finely dispersed in an REBa2 Cu3 O7-x phase. It may contain 0.05-5 wt.% one or more among Pt, Pd, Ru, Rh, Ir, Os and Re (compds.) or may further contain 1-30 wt.% Ag. The objective oxide superconductor is obtd. by adding such elements (compds.) at the time of producing the RE-Ba-Cu oxide superconductor by a melting method.