Influence of precursors in the Bi-superconductors preparation

The best results for the preparation of the oxide Bi 1.42Pb tSr 1.8Ca 2.2Cu 2.85O 10+v were obtained using Bi 6Pb 2O 11 and very short sintering periods. Other precursor, Sr 2−zNa zCaCu 2O 5+x, led to good-quality single-crystals of Bi 2−yTe ySr 2−zNa zCaCu 2O 8+q (0 < 0.3; 0 < z < 0.5). X-...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1991-12, Vol.185, p.457-458
Main Authors: Castro, A., Enjalbert, R., Esparza, D., Galy, J., Rasines, I., Rovetta, M.L.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from melts
zone melting and refining
Materials science
Methods of crystal growth
physics of crystal growth
Physics
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Summary:The best results for the preparation of the oxide Bi 1.42Pb tSr 1.8Ca 2.2Cu 2.85O 10+v were obtained using Bi 6Pb 2O 11 and very short sintering periods. Other precursor, Sr 2−zNa zCaCu 2O 5+x, led to good-quality single-crystals of Bi 2−yTe ySr 2−zNa zCaCu 2O 8+q (0 < 0.3; 0 < z < 0.5). X-ray diffraction studies on these superconductors reveal small structural changes for different preparative conditions.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(91)92031-6