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Article

Phase Transformations upon Formation of Transparent Lithium Alumosilicate Glass-Ceramics Nucleated by Yttrium Niobates

by
Olga Dymshits
1,*,
Anastasia Bachina
2,
Irina Alekseeva
1,
Valery Golubkov
3,
Marina Tsenter
1,
Svetlana Zapalova
1,
Kirill Bogdanov
4,
Dmitry Danilovich
5 and
Alexander Zhilin
6
1
S.I. Vavilov State Optical Institute, 36 Babushkina St., 192171 St. Petersburg, Russia
2
Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
3
Institute of Silicate Chemistry of Russian Academy of Sciences, Adm. Makarova emb. 2, 199034 St. Petersburg, Russia
4
Center of Information Optical Technologies, ITMO University, Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
5
Department of Chemical Technology of Refractory Nonmetallic and Silicate Materials, Faculty of Chemistry of Substances and Materials, St. Petersburg State Technological Institute (Technical University), Moskovski Ave. 26, 190013 St. Petersburg, Russia
6
D.V. Efremov Institute of Electrophysical Apparatus, Metallostroy, Doroga na Metallostroy, 3 Bld., 196641 St. Petersburg, Russia
*
Author to whom correspondence should be addressed.
Ceramics 2023, 6(3), 1490-1507; https://doi.org/10.3390/ceramics6030092
Submission received: 1 June 2023 / Revised: 21 June 2023 / Accepted: 3 July 2023 / Published: 6 July 2023
(This article belongs to the Special Issue Advanced Glasses and Glass-Ceramics)
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Abstract

Phase transformations in the lithium aluminosilicate glass nucleated by a mixture of yttrium and niobium oxides and doped with cobalt ions were studied for the development of multifunctional transparent glass-ceramics. Initial glass and glass-ceramics obtained by isothermal heat-treatments at 700–900 °C contain YNbO4 nanocrystals with the distorted tetragonal structure. In samples heated at 1000 °C and above, the monoclinic features are observed. High-temperature X-ray diffraction technique clarifies the mechanism of the monoclinic yttrium orthoniobate formation, which occurs not upon high-temperature heat-treatments above 900 °C but at cooling the glass-ceramics after such heat-treatments, when YNbO4 nanocrystals with tetragonal structure undergo the second-order transformation at ~550 °C. Lithium aluminosilicate solid solutions (ss) with β-quartz structure are the main crystalline phase of glass-ceramics prepared in the temperature range of 800–1000 °C. These structural transformations are confirmed by Raman spectroscopy and illustrated by SEM study. The absorption spectrum of the material changes only with crystallization of the β-quartz ss due to entering the Co2+ ions into this phase mainly in octahedral coordination, substituting for Li+ ions. At the crystallization temperature of 1000 °C, the Co2+ coordination in the β-quartz solid solutions changes to tetrahedral one. Transparent glass-ceramics have a thermal expansion coefficient of about 10 × 10−7 K−1.
Keywords: yttrium niobate; β-quartz solid solution; glass-ceramics; nanocrystals; small-angle X-ray scattering; in situ high-temperature X-ray diffraction; scanning electron microscopy; Raman spectroscopy; optical spectroscopy yttrium niobate; β-quartz solid solution; glass-ceramics; nanocrystals; small-angle X-ray scattering; in situ high-temperature X-ray diffraction; scanning electron microscopy; Raman spectroscopy; optical spectroscopy

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MDPI and ACS Style

Dymshits, O.; Bachina, A.; Alekseeva, I.; Golubkov, V.; Tsenter, M.; Zapalova, S.; Bogdanov, K.; Danilovich, D.; Zhilin, A. Phase Transformations upon Formation of Transparent Lithium Alumosilicate Glass-Ceramics Nucleated by Yttrium Niobates. Ceramics 2023, 6, 1490-1507. https://doi.org/10.3390/ceramics6030092

AMA Style

Dymshits O, Bachina A, Alekseeva I, Golubkov V, Tsenter M, Zapalova S, Bogdanov K, Danilovich D, Zhilin A. Phase Transformations upon Formation of Transparent Lithium Alumosilicate Glass-Ceramics Nucleated by Yttrium Niobates. Ceramics. 2023; 6(3):1490-1507. https://doi.org/10.3390/ceramics6030092

Chicago/Turabian Style

Dymshits, Olga, Anastasia Bachina, Irina Alekseeva, Valery Golubkov, Marina Tsenter, Svetlana Zapalova, Kirill Bogdanov, Dmitry Danilovich, and Alexander Zhilin. 2023. "Phase Transformations upon Formation of Transparent Lithium Alumosilicate Glass-Ceramics Nucleated by Yttrium Niobates" Ceramics 6, no. 3: 1490-1507. https://doi.org/10.3390/ceramics6030092

APA Style

Dymshits, O., Bachina, A., Alekseeva, I., Golubkov, V., Tsenter, M., Zapalova, S., Bogdanov, K., Danilovich, D., & Zhilin, A. (2023). Phase Transformations upon Formation of Transparent Lithium Alumosilicate Glass-Ceramics Nucleated by Yttrium Niobates. Ceramics, 6(3), 1490-1507. https://doi.org/10.3390/ceramics6030092

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