Abstract
Bi-2223 tapes were manufactured from a fine “two-powder” product produced by using an aerosol spray pyrolysis technique. Critical current density of 22000 A/ cm2 at 77K and 0 T was achieved. Nondestructive transmission x-ray diffraction study indicated good alignment of the superconducting grains. The texturing process of the superconducting phase was found to be nearly complete after the first 24 h of heat treatment for the samples studied. Pressing was found to play little role in the texturing process. The texturing can be enhanced by Ag-doping. Jc, however, was not found to be improved significantly, presumably due to the reduced effective cross-sectional area. A new phase, Bi-4435, was identified which may play a significant role in the formation of 2223.
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On leave from Northeastern University, Shenyang, P.R.C.
On leave from Kobe Steel Ltd., Kobe, Japan
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Wang, Y.L., Bian, W., Zhu, Y. et al. Fabrication of Ag-Sheathed Bi-2223 tapes using powders produced by aerosol spray pyrolysis. J. Electron. Mater. 24, 1817–1820 (1995). https://doi.org/10.1007/BF02652989
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DOI: https://doi.org/10.1007/BF02652989