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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Trolès, J.
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Publications (9/9 displayed)
- 2022Specific trends in phosphate glass crystallizationcitations
- 2021Specific trends in phosphate glass crystallizationcitations
- 2017Chalcogenide glass sensors for bio-molecule detectioncitations
- 2016Generation of broadband mid-infrared supercontinuum radiation in cascaded soft-glass fiberscitations
- 2016Heat capacities of crystalline and glassy lithium metaphosphate up to the transition regioncitations
- 2016Ultrafast laser processing of refractive index changes in bulk Ge15As15S70 chalcogenide glass for photonics applications in the mid-infrared
- 2004Experimental observation of higher order nonlinear absorption in tellurium based chalcogenide glassescitations
- 2003Experimental and theoretical study of higher-order nonlinearities in chalcogenide glassescitations
- 2001Nonlinear optical properties of chalcogenide glasses: comparison between Mach–Zehnder interferometry and Z-scan techniquescitations
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article
Specific trends in phosphate glass crystallization
Abstract
<p>This paper focusses on investigating and comparing the congruent crystallization of phosphate glasses with different degrees of polymerization. The study was performed both on powders, with different size fractions, and coarse particles which can be assimilated to bulk. From DSC experiments, corroborated by SEM analysis, it was demonstrated that LiPO<sub>3</sub> crystallizes from surface whereas LiGe<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> crystallizes in the whole volume. Sn<sub>2</sub>P<sub>2</sub>O<sub>7</sub> presented both phenomena, the nucleation time lag being short enough to observe internal crystallization at the laboratory time scale. Using the non-isothermal Ozawa method, the kinetic parameters of the overall devitrification process were determined in terms of the Avrami exponent and of the activation energy for crystallization. The temperature of the maximum nucleation rate was calculated by using the nucleation adiabatic theory. For the achievement of this calculation, the heat capacity temperature dependence up to melting was determined from DSC experiments. The results were found in a good agreement with the SEM observation and the results of the non-isothermal crystallization study.</p>