The influence of precursor powders on the phase evolution, grain size and transport current properties of BSCCO 2223 Ag-sheathed tapes

The influence of precursor powders on the phase evolution, grain size and transport current properties of BSCCO 2223 Ag-sheathed tapes

The BSCCO 2223 Ag-sheathed tapes were prepared with spray-dried precursor powders, which are of different starting conditions. The J c in the short fully reacted tapes varied from 24 to 47 kA/cm 2 at 77 K and 0 T. The great improvement of J c in one tape, which is characterized by the large textured...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2000-05, Vol.331 (3), p.285-291
Hauptverfasser: Su, Xiao-dong, Yoo, Jai-moo, Ko, Jae-wong, Kim, Hai-doo, Chung, Hyung-sik, Yang, Z.Q., Qiao, Gui-wen
Format: Artikel
Sprache:eng
Schlagworte:
Bi-2223/Ag-sheathed tapes
Critical current density
Grain size
Precursor powder
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Zusammenfassung:The BSCCO 2223 Ag-sheathed tapes were prepared with spray-dried precursor powders, which are of different starting conditions. The J c in the short fully reacted tapes varied from 24 to 47 kA/cm 2 at 77 K and 0 T. The great improvement of J c in one tape, which is characterized by the large textured Bi-2223 grains, homogeneity of reactant and fewer tracks of second phases in the final superconducting matrices, is probably a result of optimizing the precursor powder.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(00)00024-1