Geodesic
Nanostructured transparent Fe$^{2+}$-doped lithium aluminosilicate glass-ceramics with tunable optical properties: effect of heat-treatment regimes on near-infrared absorption
Nanosistemy: fizika, himiâ, matematika, Tome 16 (2025) no. 1, pp. 58-66.

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This study explores optical tuning of nanostructured transparent lithium aluminosilicate glassceramics nucleated by titania and doped with Fe$^{2+}$ ions. The glass was melted at 1620$^\circ$C and heat-treated between 660$^\circ$C and 800$^\circ$C, yielding nanocrystals of $\gamma$-Al$_2$O$_3$ (2 – 23 nm) and -quartz solid solutions (8 – 40 nm). Fe$^{2+}$ ions in octahedral coordination in the initial glass are responsible for absorption in the 1000 – 1400 nm range. Tetrahedrally coordinated Fe$^{2+}$ ions in $\gamma$-Al$_2$O$_3$ are responsible for absorption at 1550 – 2300 nm. Crystallization of $\beta$-quartz solid solutions leads to decreasing the $\gamma$-Al$_2$O$_3$ fraction and corresponding decrease of absorption at 1550 – 2300 nm. Differential scanning calorimetry, scanning electron microscopy, X-ray diffraction, Raman and optical spectroscopy reveal the relationship between heat-treatment regimes, crystalline phase development, and optical performance, highlighting the potential of Fe$^{2+}$-doped LAS glass-ceramics for advanced photonic applications. The glass-ceramics exhibit customizable optical properties, promising for saturable absorbers in passive Q-switching lasers.
Keywords: nanophase glass-ceramics, $\gamma$-Al$_2$O$_3$ nanocrystals, nanocrystals of $\beta$-quartz solid solution
Mots-clés : Fe$^{2+}$ ions. 
@article{NANO_2025_16_1_a6,
     author = {Kristina A. Trukhanova and Olga S. Dymshits and Irina P. Alekseeva and Kirill V. Bogdanov and Svetlana S. Zapalova and Maksim I. Tenevich and Anastasia K. Bachina and Vadim I. Popkov and Aleksandr A. Zhilin},
     title = {Nanostructured transparent {Fe}$^{2+}$-doped lithium aluminosilicate glass-ceramics with tunable optical properties: effect of heat-treatment regimes on near-infrared absorption},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {58--66},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2025_16_1_a6/}
}
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AU  - Maksim I. Tenevich
AU  - Anastasia K. Bachina
AU  - Vadim I. Popkov
AU  - Aleksandr A. Zhilin
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%0 Journal Article
%A Kristina A. Trukhanova
%A Olga S. Dymshits
%A Irina P. Alekseeva
%A Kirill V. Bogdanov
%A Svetlana S. Zapalova
%A Maksim I. Tenevich
%A Anastasia K. Bachina
%A Vadim I. Popkov
%A Aleksandr A. Zhilin
%T Nanostructured transparent Fe$^{2+}$-doped lithium aluminosilicate glass-ceramics with tunable optical properties: effect of heat-treatment regimes on near-infrared absorption
%J Nanosistemy: fizika, himiâ, matematika
%D 2025
%P 58-66
%V 16
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NANO_2025_16_1_a6/
%G en
%F NANO_2025_16_1_a6
Kristina A. Trukhanova; Olga S. Dymshits; Irina P. Alekseeva; Kirill V. Bogdanov; Svetlana S. Zapalova; Maksim I. Tenevich; Anastasia K. Bachina; Vadim I. Popkov; Aleksandr A. Zhilin. Nanostructured transparent Fe$^{2+}$-doped lithium aluminosilicate glass-ceramics with tunable optical properties: effect of heat-treatment regimes on near-infrared absorption. Nanosistemy: fizika, himiâ, matematika, Tome 16 (2025) no. 1, pp. 58-66. http://geodesic.mathdoc.fr/item/NANO_2025_16_1_a6/