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Nucleation and growth behavior of Er3+doped oxyfluorophosphate glasses

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Details

Original languageEnglish
Pages (from-to)25703-25716
Number of pages14
JournalRSC Advances
Volume10
Issue number43
DOIs
Publication statusPublished - 7 Jul 2020
Publication typeA1 Journal article-refereed

Abstract

The nucleation and growth behavior of glasses with the composition (75 NaPO3-25 CaF2)100-x-(TiO2/ZnO/MgO)x, with x = 0 and x = 1.5 (in mol%) is investigated. The glasses possess similar activation energy for crystallization and Johnson-Mehl-Avrami exponent, with value 2 confirming bulk crystallization of crystals with needle like shape. The Ti and Mg glasses exhibit broader nucleation curve and higher Tn max than the x = 0 and Zn glasses due to their stronger field strength. The crystal growth rates were determined and validated using SEM. Finally, we showed that the nucleation and growth of glasses can be controlled due to the large difference between onset of crystallization and maximum nucleation temperature which is crucial when preparing novel transparent glass-ceramics.

Publication forum classification

Field of science, Statistics Finland