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Thermal Expansion of Ba3Lu(BO3)3 Borate
- Authors: Biryukov Y.P.1, Bubnova RS.1
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Affiliations:
- Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia
- Issue: Vol 49, No 4 (2023)
- Pages: 432-438
- Section: Articles
- URL: https://journals.rcsi.science/0132-6651/article/view/139346
- DOI: https://doi.org/10.31857/S0132665123600048
- EDN: https://elibrary.ru/SGYEIM
- ID: 139346
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Abstract
In this study, Ba3Lu(BO3)3 borate obtained by solid-phase synthesis is explored by high-temperature X-ray powder diffraction in the temperature range from 25 to 900°C. At room temperature, the compound expands slightly anisotropically (αmax/αmin = 1.2), and with an increase in temperature, the degree of anisotropy increases significantly (αmax/αmin = 6.9 at 900°C). The maximum expansion is observed along the crystallographic axis c (αc = 10.45 × 10–6°C–1 at 25°C and 36.34 × 10–6°C–1 at 900°C), perpendicular to which the boron-oxygen triangles [BO3] are located, and the minimum is in the plane where the triangles are located
About the authors
Ya. P. Biryukov
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia
Email: y.p.biryukov@gmail.com
Россия, 199034, наб. Макарова, 2, Санкт-Петербург
R S. Bubnova
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia
Author for correspondence.
Email: rimma_bubnova@mail.ru
Россия, 199034, Санкт-Петербург, наб. Макарова, 2
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