TY - JOUR
T1 - Synthesis of highly pure bismuth-2223 by a two-powder process
AU - Dorris, S. E.
AU - Prorok, B. C.
AU - Lanagan, M. T.
AU - Sinha, S.
AU - Poeppel, R. B.
N1 - Funding Information:
This work was supported by the US Department of Energy, Conservation and Renewable Energy, as part of a program to develop electric power technology, under Contract W-31-109-Eng-38. The authors wish to thank V.A. Maroni for his insight into this work, and are grateful to E.E. Hell-strom and D.C. Larbalestier (Applied Superconductivity Center at the University of Wisconsin ) for the helpful discussions and encouragement during the completion of this stud}'. The authors thank -\. 1 imc-zawa ( Applied Superconductivity Center at the I ;ni-versity of Wisconsin) for making the .A(" susceptibility measurements.
PY - 1993/7/1
Y1 - 1993/7/1
N2 - Use of a so-called two-powder process results in rapid formation of a highly pure superconducting bismuth-2223 phase during powder-in-tube processing. In this process, SrχCa1-χCuO2 and Bi1.8Pb0.4Sr2-χCa1+χCu2O8 are formed as separate intermediate phases, and mixed, then processed together within a silver sheath. Mixtures with χ values of 0.0, 0.25, 0.50, 0.75, and 1.0 are studied in order to probe the relationship between 2223 formation and the melting behavior of 2212. The best results to date have been obtained with the χ=0.0 mixture containing high-melting, strontium-rich 2212 and calcium cuprate. The process is very reproducible and produces nearly pure 2223 in as little as 50 h.
AB - Use of a so-called two-powder process results in rapid formation of a highly pure superconducting bismuth-2223 phase during powder-in-tube processing. In this process, SrχCa1-χCuO2 and Bi1.8Pb0.4Sr2-χCa1+χCu2O8 are formed as separate intermediate phases, and mixed, then processed together within a silver sheath. Mixtures with χ values of 0.0, 0.25, 0.50, 0.75, and 1.0 are studied in order to probe the relationship between 2223 formation and the melting behavior of 2212. The best results to date have been obtained with the χ=0.0 mixture containing high-melting, strontium-rich 2212 and calcium cuprate. The process is very reproducible and produces nearly pure 2223 in as little as 50 h.
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U2 - 10.1016/0921-4534(93)90486-A
DO - 10.1016/0921-4534(93)90486-A
M3 - Article
AN - SCOPUS:0027623823
VL - 212
SP - 66
EP - 74
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -