2026-08-22T10:37:48Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/435252023-08-25T20:08:35Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Correcher, V.
author
Rodriguez Lazcano, Y.
author
García Guinea, J.
author
Crespo Feo, María Elena
2023-06-20T01:20:55Z
2023-06-20T01:20:55Z
2010-09
Issn: 0103-9733 ; Essn: 1678-4448
10.1590/S0103-97332010000300017
https://hdl.handle.net/20.500.14352/43525
http://dx.doi.org/10.1590/S0103-97332010000300017
The blue thermoluminescence (TL) emission of different thermally annealed (i) ß-eucryptite (LiAlSiO4), (ii) virgilite-petalite (LiAlSi5O12) and (iii) virgilite-petalite-bikitaite (LiAlSi10O22) mixed crystals have been studied. The observed changes in the TL glow curves could be linked to simultaneous processes taking place in the lithium aluminosilicate lattice structure (phase transitions, consecutive breaking linking of bonds, alkali self-diffusion, redox reactions, etc). The stability of the TL signal after four months of storage performed at RT under red light, shows big differences between annealed (12 hours at 1200°C) and non-annealed samples. The fading process in non-annealed samples can be fitted to a first-order decay mathematical expression; however preheated samples could not be reasonably fitted due to the highly dispersion detected. The changes observed in the X-ray diffractograms are in the intensity of the peaks that denote modifications in the degree of crystallinity and, in addition, there are some differences in the appeareance of new peaks that could suppose new phases (e.g. ß-spodumene).
eng
Atribución-NoComercial 3.0 España
Blue thermoluminescence emission of annealed lithium rich aluminosilicates
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Blue thermoluminescence emission of annealed lithium rich aluminosilicates.pdf
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Blue thermoluminescence emission of annealed lithium rich aluminosilicates.pdf.txt