Abstract
The thermally stimulated luminescence of oxides, carbonates and high T C ceramic superconductors (perovskites of the (BiPb)SrCaCuO type obtained by solid state reaction) was measured in the temperature interval 20–500°C. The glow-curves obtained on the perovskites are compared with those determined for both the precursor compounds and pure (BiPb)SrCaCuO powders of the same stoichiometry. The analysis of the data evidences the possibility of characterising the oxides and carbonates and of detecting very low intensity TL signals produced in the superconductors by precursor compounds, which can be identified in some cases, and/or low amounts of semiconducting or insulating compounds probably formed during the sintering procedure.
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