Abstract
In this paper, novel results on the blue thermally stimulated luminescence (TSL) emission of ulexite (NaCaB5O6(OH)6·5H2O) have been studied. The four maxima appearing at 60, 110, 200 and 240°C on the TSL glow curves of this borate could be respectively associated to: (i) the first dehydration (NaCaB5O6(OH)6·5H2O→NaCaB5O6(OH)6·3H2O), (ii) the creation-annihilation of the three-hydrated phase, (iii) the Na-coordinated chains dehydroxylation and the starting point of the alkali self-diffusion through the lattice and (iv) the amorphisation of the lattice. These results are fairly well correlated with the differential thermal analyses (DTA), in situ thermal observations under environmental scanning electron microscope (TESEM) and thermal X-ray diffraction (TXRD) techniques.
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Correcher, V., Garcia-Guinea, J. & Valle-Fuentes, F. Preliminary study of the thermally stimulated blue luminescence of ulexite . J Therm Anal Calorim 83, 439–444 (2006). https://doi.org/10.1007/s10973-005-7122-9
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DOI: https://doi.org/10.1007/s10973-005-7122-9