Abstract
Na-Gd phosphate glasses doped with Ce3+ are intensively studied due to their high intensity radioluminescence. Crystallization kinetics of glass with nominal composition of NaGd(PO3)4 was investigated using non-isothermal DTA at heating rates between 10 and 115 K min−1 and evaluated by the Kissinger and Ozawa peak methods. The activation energy for crystallization was determined for heating rates lower than 72 Kmin−1 as 789.91 and 802.77 kJ mol−1 by using the Kissinger and Ozawa methods, respectively. Formation of nuclei, their dimensions and movement of the crystallization front were observed using isothermal optical thermomicroscopy.
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