Effects of silver on the phase formation of the Bi-Pb-Sr-Ca-Cu-O superconductors
β Scribed by Sendjaja Kao; Ahmed El-Hamalawy; K. Y. Simon Ng
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 842 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0896-1107
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π SIMILAR VOLUMES
Measurements of the excess conductivity above the superconducting tranSition for 110-K phase of the Bi(Pb, Sb)-Sr-Ca-Cu-O compound are reported. The data are very well described in terms of the classic theory of thermodynamic fluctuations in a two-dimensional superconductor.
We identify the preparation procedures to obtain polycrystalline pellets of Bi-22 12 and of Bi-2223 high-temperature superconductors, which show only the superconducting properties and the X-ray diffraction pattern of one or the other phase ("singlephase" pellets). These procedures were found by sys