S. Tautkus et al., Thermogravimetric analysis - a powerful tool for the refinement of the synthesis process of Hg-based superconductors, TALANTA, 52(2), 2000, pp. 189-199
The paper presents the results of studies on thermogravimetric (TG) charact
erization of precursors and Hg-based superconductors synthesized by the sol
-gel method. TG experiments were performed in an oxygen flow in order to un
derstand the decomposition mechanisms of the fabricated gels and to determi
ne the synthesis temperature of the intermediate precursors for the HgBa2Ca
Cu2O6+delta, HgBa2Ca2Cu3O8+delta, and Hg1-xTlxBa2Ca2Cu3O8+delta superconduc
tors. The optimum annealing temperature for a desired oxygen content in the
superconducting compounds has been established by thermogravimetric measur
ements. To assist the interpretation of the obtained results the elemental
analyses of the synthesized products were performed by AAS and EDS (SEM) me
thods. (C) 2000 Elsevier Science B.V. All rights reserved.