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Synthesis, phase stability and superconductivity of Pb-doped and Pb-free Bi-2223

โœ Scribed by P.V.P.S.S. Sastry; A.R. West

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
156 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

Synthesis, stoichiometry and To of Bi2Sr2Ca2Cu3010 (Bi-2223) superconductor with a variety of both Pb-free and Pb-doped compositions and with variable Ca/Sr-and Bi/(Ca+Sr)-ratios is reported. All the samples were prepared by a novel synthetic pathway involving two precursors, (Bi,Pb)2CuO4 and Sr2. xCaxCuO3. Phase-pure 2223 can be prepared from stoichiometric compositions without resorting to offstoichiometric compositions containing excess of Pb, Bi, Ca and Cu. To of 2223 phase is weakly dependent on composition and heat treatment conditions.

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