Mk. Vanbael et al., STUDY OF DIFFERENT CHEMICAL METHODS TO PREPARE CERAMIC HIGH-TEMPERATURE SUPERCONDUCTORS, Superconductor science and technology, 11(1), 1998, pp. 82-87
The preparation of precursors of bulk YBa2Cu3O7-delta, Bi2Sr2CaCu2O8+d
elta and YBa2Cu4O8 materials by coprecipitation-filtration of hydroxid
es or oxalates and sol-gel techniques is presented. Their properties a
re compared with those of products prepared by the conventional solid-
state reaction method by means of TGA, FTIR, XRD, SEM, EDX and resisti
vity measurements.