Abstract
The crystallization of glass with a composition of Bi2Sr2CaCu2O8 + x + 0.25Sr0.6Ca0.4In2O4was studied in air between 400 and 800°C. Below 700°C, crystalline phases were formed in the following sequence: (Sr,Ca)0.9Bi1.1O2.55 , Cu2O, Bi-2201, (Sr,Ca)In2O4 , (Sr,Ca)3Bi2O6 , and Bi-2212. Above 700°C, the predominant phases were Bi-2212 and (Sr,Ca)In2O4 . The introduction of In into Bi–Sr–Ca–Cu–O was shown to reduce the glass-forming capability of this system, without suppressing Bi-2212 formation. The Bi2Sr2CaCu2O8 + x + 0.25Sr0.6Ca0.4In2O4composites prepared by annealing the precursor glass contained 0.2- to 0.4-μm inclusions and possessed enhanced superconducting properties.
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Kazin, P.E., Kovalevskii, A.A., Poltavets, V.V. et al. Preparation of Bi2Sr2CaCu2O8 + x-Matrix Composites Containing Fine Strontium Calcium Indate Inclusions via Glass Crystallization. Inorganic Materials 37, 1183–1187 (2001). https://doi.org/10.1023/A:1012561512644
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DOI: https://doi.org/10.1023/A:1012561512644