Substitution Effects of Pb for Bi on the Formation of High-Tc Superconducting Thick Films in the Bi-Pb-Ca-Sr-Cu-O System by the Melt-Solidification Method
- 1 August 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (8A) , L1408
- https://doi.org/10.1143/jjap.28.l1408
Abstract
Superconducting thick films of Bi1.8Pb0.2Ca2Sr2Cu3O x have been prepared by the melt-solidification process. The mixtures of oxides or carbonates of each metal were melted on MgO single-crystal substrates at 1000°C for 5 min and then held for crystallization at various temperatures and for various periods. The holding at 850°C for 15 h produced thick films with T c(zero) at 102 K owing to the deposition of the 110 K phase along with the 80 K phase, both phases being highly c-axis orientated. This is indicative of the effectiveness of the substitution of Pb for a part of Bi for the deposition of the 110 K phase in the melt-solidification process.Keywords
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