Geodesic
Optical glass-ceramics based on Fe$^{2+}$: MgAl$_2$O$_4$ nanocrystals and nucleated by TiO$_2$ and ZrO$_2$
Nanosistemy: fizika, himiâ, matematika, Tome 14 (2023) no. 6, pp. 690-698 Cet article a éte moissonné depuis la source Math-Net.Ru

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Transparent glass-ceramics of magnesium aluminosilicate system based on Fe$^{2+}$: MgAl$_2$O$_4$ spinel nanocrystals nucleated by a mixture of TiO$_2$ and ZrO$_2$ and doped with 0.6 mol% FeO were developed. The glass was melted at 1580$^\circ$C with stirring and heat-treated in the temperature range from 800 to 1300$^\circ$C. The structure and spectroscopic properties of the glass and glass-ceramics were studied by DSC and XRD methods, Raman and absorption spectroscopy. ZrTiO$_4$ nanocrystals 6 nm in size precipitate during the nucleation heat-treatment at 800$^\circ$C. Spinel nanocrystals 9–14 nm in size are formed during heat-treatments at 850–1000$^\circ$C. Intense absorption at $\sim$2$\mu$m is observed due to Fe$^{2+}$ ions in tetrahedral positions in these crystals. Iron-doped sapphirine crystallization in transparent glass-ceramics at 1000–1050$^\circ$C results in a decrease of absorption in this spectral range. The glass-ceramics are important for the development of saturable absorbers for the spectral range of 2–3$\mu$m.
Keywords: nanocrystals, spinel, transparent glass-ceramics, nucleating agents.
Mots-clés : ferrous ions 
@article{NANO_2023_14_6_a8,
     author = {Vasilisa S. Bukina and Olga S. Dymshits and Irina P. Alekseeva and Anna A. Volokitina and Svetlana S. Zapalova and Aleksandr A. Zhilin},
     title = {Optical glass-ceramics based on {Fe}$^{2+}$: {MgAl}$_2${O}$_4$ nanocrystals and nucleated by {TiO}$_2$ and {ZrO}$_2$},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {690--698},
     year = {2023},
     volume = {14},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2023_14_6_a8/}
}
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AU  - Anna A. Volokitina
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%0 Journal Article
%A Vasilisa S. Bukina
%A Olga S. Dymshits
%A Irina P. Alekseeva
%A Anna A. Volokitina
%A Svetlana S. Zapalova
%A Aleksandr A. Zhilin
%T Optical glass-ceramics based on Fe$^{2+}$: MgAl$_2$O$_4$ nanocrystals and nucleated by TiO$_2$ and ZrO$_2$
%J Nanosistemy: fizika, himiâ, matematika
%D 2023
%P 690-698
%V 14
%N 6
%U http://geodesic.mathdoc.fr/item/NANO_2023_14_6_a8/
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%F NANO_2023_14_6_a8
Vasilisa S. Bukina; Olga S. Dymshits; Irina P. Alekseeva; Anna A. Volokitina; Svetlana S. Zapalova; Aleksandr A. Zhilin. Optical glass-ceramics based on Fe$^{2+}$: MgAl$_2$O$_4$ nanocrystals and nucleated by TiO$_2$ and ZrO$_2$. Nanosistemy: fizika, himiâ, matematika, Tome 14 (2023) no. 6, pp. 690-698. http://geodesic.mathdoc.fr/item/NANO_2023_14_6_a8/