Preparation of the 110 K single phase superconductor Bi1.6Pb0.4Ca2Sr2Cu3Ox using a precursor matrix reaction method
- 1 June 1991
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 6 (6) , 1160-1164
- https://doi.org/10.1557/jmr.1991.1160
Abstract
Nearly single phase sintered samples of the lead-doped high-Tc oxide superconductor of nominal composition Bi1.6Pb0.4Ca2Sr2Cu3Ox have been prepared using a precursor matrix reaction method. The experimental results indicate that in samples annealed under optimum conditions (200 h at 855 °C) the volume fraction of impurity phases is only about 3%. If the optimum annealing time is exceeded, the high-Tc phase begins to decompose into the low-Tc phase and nonsuperconducting phases. It is found that the precursor reaction matrix method minimizes loss of lead during processing.Keywords
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