Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1818542 | Physica C: Superconductivity and its Applications | 2011 | 4 Pages |
Abstract
An alternative sol–gel route for synthesizing precursors of mercury based superconductors is presented. This route is based on urea as a combustion agent and has been applied in the synthesis of HgBa2Ca2Cu3O8+δ (Hg-1223). Moreover, the effects of the precursor preparation on the synthesis of Hg-1223 were studied. This method is further compared with other sol–gel routes used in the synthesis of this family of compounds.
► Urea appears as an alternative sol–gel agent to produce Ba–Ca–Cu–O precursor powders. ► The urea route allowed complete decarbonation in shorter times. ► This route does not need the use of special annealing atmospheres. ► Another advantage of this route is the much lower cost of the reactants.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
T.M. Mendonça, P.B. Tavares, J.G. Correia, A.M.L. Lopes, C. Darie, J.P. Araújo,