ISSN:
0392-6737
Keywords:
Other topics in superconductivity
;
Conference proceedings
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Summary High-T c superconductors with nominal composition Bi1.8Pb0.4Sr2Ca2.2Cu3O x and eventually admixed with metallic silver were prepared by an original version of the citrate route which permits an excellent interspersion of the elements and makes no use of nitrates. After exsiccation, silver is found to be in metallic form with crystal size of about 300 Å. After the decomposition of the organic part, a special treatment was found to reduce the carbon content and to obtain only the desired phase composition,i.e. 2212, Ca2PbO4 and metallic Ag. The powders obtained show high reactivity in the high-T c phase formation and very little weight loss during calcination. Tapes prepared with the powder-in-tube method showed highJ c values and constant improvement after several thermal treatments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02462161
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