A precursor powder was prepared with the nominal composition Bi1.84Pb35Sr9Ca3Ox by the pyrolysis technique starting from a solution of citrates. Reactions among components were investigated by thermogravimetric and differential thermal analysis in the temperature range 700-850°C. Reaction kinetics and mechanisms involved in the transformation of the organometallic precursors into superconducting phases were examined and mathematically treated by relationships theoretically derived for phenomenological models. The identification of reaction intermediates that play a crucial role in the synthetic process was systematically performed via XRD and a comparison with the solid state reaction route was attempted.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering